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Bug 361036

Summary:	Context menu disappears while navigating Format>Order submenu
Product:	[Modeling] GMF-Runtime	Reporter:	Steve Francisco <stephen.francisco>
Component:	General	Assignee:	Project Inbox <gmf-runtime-inbox>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	P3	CC:	ahunter.eclipse, ckadner, rahul.jain
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Windows 7
Whiteboard:

Description Steve Francisco

2011-10-14 17:33:39 EDT

Build Identifier: Ganymede release SR2. GMF 2.1.3

When editing a diagram (like the geoshapes diagram example for GMF) if you right click on a shape so you can try to change its z-order, the context menu will disappear (most of the time, but not 100%) before you can make a choice.
This only happens on Windows 7.

Reproducible: Sometimes

Steps to Reproduce:
1. start an Eclipse IDE (3.4.2) with GMF and GMF diagram examples loaded
2. use File > New > Examples to create the geoshapesdiagram example in a project
3. add a few shapes to your diagram, then right click on one
4. in the context menu, move the mouse over "Format" to open the submenu
5. in the Format menu, move the mouse over the entries until you get to "Order"
6. most of the time, as it draws the "Order" submenu (which has options like "bring to front"), the entire context menu will go away.  If it doesn't then just try moving the mouse up and down the menu a few times.

I'm not sure why it only happens on Windows 7 but it's pretty reliable to reproduce.  I debugged as far as the DiagramContextMenuProvider in org.eclipse.gmf.runtime.diagram.ui.providers but I don't know enough about how the menus work to isolate the exact problem.

I believe it will also happen with 3.6.x builds and possibly newer, but our immediate issue is with Eclipse 3.4.2.

Comment 1 Rahul jain

2012-07-09 05:50:42 EDT

Did some more investigation on this and seems to be Window 7 theme related issue as it is only reproducible in windows 7 default theme. If you change the window7 theme to "windows classic", the issue is not reproducible.