Description M H 2020-04-20 06:07:03 EDT

Just upated Eclipse from 4.14. to 4.15 and now, every now and then an error dialog pops up:

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'Delayed model change job' has encountered a problem.
An internal error has occured.
  Index out of bounds
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The Eclipse .log shows:

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!ENTRY org.eclipse.ui 4 4 2020-04-20 11:15:08.054
!MESSAGE An internal error has occurred.
!STACK 0
java.lang.IllegalArgumentException: Index out of bounds
	at org.eclipse.swt.SWT.error(SWT.java:4704)
	at org.eclipse.swt.SWT.error(SWT.java:4638)
	at org.eclipse.swt.SWT.error(SWT.java:4609)
	at org.eclipse.swt.widgets.Widget.error(Widget.java:432)
	at org.eclipse.swt.widgets.TreeItem.getItem(TreeItem.java:715)
	at org.eclipse.jface.viewers.TreeViewer.lambda$4(TreeViewer.java:829)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1397)
	at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:363)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1358)
	at org.eclipse.jface.viewers.TreeViewer.remove(TreeViewer.java:810)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.handleRemove(TreeModelContentProvider.java:1546)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateNodes(TreeModelContentProvider.java:1266)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateNodes(TreeModelContentProvider.java:1299)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateNodes(TreeModelContentProvider.java:1299)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateNodes(TreeModelContentProvider.java:1299)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateModel(TreeModelContentProvider.java:562)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.doModelChanged(TreeModelContentProvider.java:530)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.access$0(TreeModelContentProvider.java:524)
	at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider$DelayedDoModelChangedJob.runInUIThread(TreeModelContentProvider.java:436)
	at org.eclipse.ui.progress.UIJob.lambda$0(UIJob.java:95)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3897)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3527)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:658)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1447)
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