420126 – [FastView] Parts of eclipse window become a light blue square and don't get repainted.

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Bug 420126 - [FastView] Parts of eclipse window become a light blue square and don't get repainted.

Summary: [FastView] Parts of eclipse window become a light blue square and don't get r...

Status:	VERIFIED FIXED

Alias:	None

Product:	Platform
Classification:	Eclipse Project
Component:	UI (show other bugs)
Version:	4.4
Hardware:	PC Windows 7

Importance:	P3 critical (vote)
Target Milestone:	4.4 M3
Assignee:	Platform UI Triaged
QA Contact:	Eric Moffatt

URL:
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2013-10-22 20:09 EDT by Srikanth Sankaran
Modified:	2013-10-28 08:53 EDT (History)
CC List:	6 users (show)

See Also:

Attachments
screenshot (141.65 KB, image/png) 2013-10-22 21:14 EDT, Srikanth Sankaran	no flags	Details
gtk-screenshot (123.18 KB, image/png) 2013-10-25 06:33 EDT, Arun Thondapu	no flags	Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description Srikanth Sankaran

2013-10-22 20:09:58 EDT

I have run into this both on 4.4 M2 and Version: 4.4.0
Build id: N20131014-2005

Suddenly (don't recall a fixed pattern of user action preceding the event)
a part of eclipse window becomes a light blue blank square (I am on Windows
64, default out of the box color schemes if that matters) and does not refresh
itself anymore. On one occasion, the size of this area was half the overall
screen, at other times, perhaps a quarter. 

Minimize/maximize, resize the subwindows, reset perspective etc don't help. 
I have to shutdown eclipse and restart for it to go away. Somehow some widget
is losing track of its size or is not responding to repaint event - may be.

If this is a platform/ui issue, please reassign. This makes M2 pretty unusable
for me actually.

Comment 1 Srikanth Sankaran

2013-10-22 20:11:13 EDT

If/when I run into this the next time, I'll attach a screen shot.

Comment 2 Srikanth Sankaran

2013-10-22 21:14:36 EDT

Created attachment 236789 [details]
screenshot

Screen shot when the problem shows up.

In this particular instance, I was able to resize the adjoining window to
cover up the blue/gray area and did not have to restart eclipse, but in
the past I had to.

Comment 3 Srikanth Sankaran

2013-10-22 23:17:52 EDT

Happened again. And when I double clicked on an editor tab to maximize it,
I got a "asynchronous [some error]: widget is disposed"

Some error: I failed to capture the exact text

Comment 4 Srikanth Sankaran

2013-10-24 06:50:11 EDT

I am forced to abandon 4.4 M2 and go back to Kepler SR1 - This bug makes M2 and
later builds (latest I tried N20131014-2005) completely unusable for me.

SWT team, can this be triaged so if this belongs elsewhere (which I am not
knowledgieble enough to judge) at least it can be assigned to the right inbox.
TIA.

Comment 5 Dani Megert

2013-10-24 11:50:06 EDT

(In reply to Srikanth Sankaran from comment #4)
> I am forced to abandon 4.4 M2 and go back to Kepler SR1 - This bug makes M2
> and
> later builds (latest I tried N20131014-2005) completely unusable for me.

Please attach the stack trace (.log). Steps would also be helpful.

Comment 6 Srikanth Sankaran

2013-10-24 12:14:16 EDT

(In reply to Dani Megert from comment #5)

> Please attach the stack trace (.log). Steps would also be helpful.

Sorry, should have done that already: Here is a very relevant entry. I recall
that these gray patches show up when I minimize/maximize/restore and
the stack trace appears pertinent:

java.lang.NullPointerException
	at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon.restore(MinMaxAddon.java:580)
	at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon$8.handleEvent(MinMaxAddon.java:395)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4688)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:205)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:80)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
	at org.eclipse.emf.ecore.util.EcoreEList.dispatchNotification(EcoreEList.java:249)
	at org.eclipse.emf.common.notify.impl.NotifyingListImpl.remove(NotifyingListImpl.java:725)
	at org.eclipse.emf.common.util.AbstractEList.remove(AbstractEList.java:460)
	at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon.unzoom(MinMaxAddon.java:735)
	at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon$8.handleEvent(MinMaxAddon.java:397)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4688)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:205)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:80)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
	at org.eclipse.emf.ecore.util.EcoreEList.dispatchNotification(EcoreEList.java:249)
	at org.eclipse.emf.common.notify.impl.NotifyingListImpl.remove(NotifyingListImpl.java:725)
	at org.eclipse.emf.common.util.AbstractEList.remove(AbstractEList.java:460)
	at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon.setState(MinMaxAddon.java:280)
	at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon.access$2(MinMaxAddon.java:270)
	at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon$4.mouseDoubleClick(MinMaxAddon.java:235)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:196)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
	at java.lang.reflect.Method.invoke(Method.java:613)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1426)

Comment 7 Dani Megert

2013-10-25 06:04:19 EDT

Paul already noticed similar bug 406733 back in April (i.e. Kepler). Do you no longer see it now when using Kepler SR1? Is this with the same workspace? If so, could you try to get more detailed steps? I tried various scenarios and did not run into this issue.

Comment 8 Arun Thondapu

2013-10-25 06:33:33 EDT

Created attachment 236885 [details]
gtk-screenshot

I was able to reproduce the bug on GTK (Ubuntu 12.04) using Luna M2 and the following steps seem to do it for me consistently:

1) Open any files (java, xml, text, file type doesn't matter) in the editor.
2) Maximize the editor area so that all the other views are minimized.
3) Try to open any view that is not already open using Ctrl + 3. 

Significant portions of the Eclipse window are grayed out immediately. However, I can get the grayed out portions to reappear by minimizing the editor area and trying to open the view once again.

Comment 9 Srikanth Sankaran

2013-10-25 07:03:32 EDT

(In reply to Dani Megert from comment #7)
> Paul already noticed similar bug 406733 back in April (i.e. Kepler). Do you
> no longer see it now when using Kepler SR1? 

I haven't seen this on SR1.

(In reply to Arun Thondapu from comment #8)

> Significant portions of the Eclipse window are grayed out immediately.
> However, I can get the grayed out portions to reappear by minimizing the
> editor area and trying to open the view once again.

When I ran into this problem, I saw two variants: One in which I could resize
other windows and one in which the real estate was completely lost.

Comment 10 Arun Thondapu

2013-10-25 07:23:39 EDT

I have a different stack trace, so I'm not sure if this is the same problem as the one seen on Windows but it is still an NPE from org.eclipse.e4.ui.workbench.swt plug-in that seems to be causing the problem.

!ENTRY org.eclipse.e4.ui.workbench.swt 4 2 2013-10-25 15:51:19.855
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.e4.ui.workbench.swt".
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:877)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:857)
	at org.eclipse.e4.core.internal.di.InjectorImpl.disposed(InjectorImpl.java:386)
	at org.eclipse.e4.core.internal.di.Requestor.disposed(Requestor.java:132)
	at org.eclipse.e4.core.internal.contexts.ContextObjectSupplier$ContextInjectionListener.update(ContextObjectSupplier.java:76)
	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:107)
	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.handleInvalid(TrackableComputationExt.java:70)
	at org.eclipse.e4.core.internal.contexts.EclipseContext.dispose(EclipseContext.java:171)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.clearContext(PartRenderingEngine.java:940)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:920)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$3(PartRenderingEngine.java:828)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$8.run(PartRenderingEngine.java:823)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:808)
	at org.eclipse.e4.ui.workbench.renderers.swt.ElementReferenceRenderer.disposeWidget(ElementReferenceRenderer.java:109)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:899)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$3(PartRenderingEngine.java:828)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$8.run(PartRenderingEngine.java:823)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:808)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$1.handleEvent(PartRenderingEngine.java:153)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:185)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4514)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:207)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:80)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
	at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setToBeRendered(UIElementImpl.java:290)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:1165)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:1100)
	at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.closePart(StackRenderer.java:1061)
	at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.access$3(StackRenderer.java:1043)
	at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer$12.close(StackRenderer.java:937)
	at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1852)
	at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:284)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4390)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1387)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3740)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3361)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:146)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:613)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:109)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:80)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:372)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:226)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
	at java.lang.reflect.Method.invoke(Method.java:613)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
Caused by: java.lang.NullPointerException
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityView.disposeSite(CompatibilityView.java:267)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.internalDisposeSite(CompatibilityPart.java:405)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.invalidate(CompatibilityPart.java:233)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.destroy(CompatibilityPart.java:392)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
	at java.lang.reflect.Method.invoke(Method.java:613)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
	... 73 more

Comment 11 Dani Megert

2013-10-25 09:28:39 EDT

Just got the NPE also using I20131024-2000:

org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:243)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:224)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
	at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:163)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:222)
	at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:420)
	at org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:837)
	at org.eclipse.ui.menus.CommandContributionItem.access$21(CommandContributionItem.java:823)
	at org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:813)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4350)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:146)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:613)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:109)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:80)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:372)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:226)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
Caused by: java.lang.NullPointerException
	at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1175)
	at org.eclipse.ui.internal.WorkbenchPage$12.run(WorkbenchPage.java:4066)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:4063)
	at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:4038)
	at org.eclipse.ui.handlers.ShowViewHandler.openView(ShowViewHandler.java:126)
	at org.eclipse.ui.handlers.ShowViewHandler.execute(ShowViewHandler.java:70)
	at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:290)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
	... 37 more

Comment 12 Dani Megert

2013-10-25 09:45:50 EDT

I can now also reproduce:
1. paste: "class Bug {}" into Package Explorer
2. click the 'Maximize' button
3. use Ctrl+3 to open the Search view
   ==> damage and maybe NPE
4. Window > Reset Perspective...
5. click the 'Maximize' button
6. use Ctrl+3 to open the Search view
   ==> damage and definitely NPE(s)

Comment 13 Dani Megert

2013-10-25 09:55:56 EDT

This used to work in M1 but got broken in M2.

Paul or Eric, can one of you please take a look for M3? Thanks!

Comment 14 Eric Moffatt

2013-10-25 10:46:43 EDT

Sheesh, here's some easier steps...

Max editor area
Ctrl-3  -> Ant

same cheese

Comment 15 Eric Moffatt

2013-10-25 11:04:28 EDT

Committed

http://git.eclipse.org/c/platform/eclipse.platform.ui.git/commit/?id=882199763ed8ff22f7aa16a1d6c807437b271919

The code added to the CleanupAddon in the fix for bug 414999 was incorrectly setting the 'visible' flag on minimized stacks...

Comment 16 Dani Megert

2013-10-28 08:53:32 EDT

Verified in I20131027-2130.