The issue jbide-12783 is fixed by a workaround patch that adds the Menu Listener to the Context Menu Manager that cleans the menu items before the final call to MenuManager.update(boolean, boolean) is to be done prior the menu is to be shown.

This looks like the reason of the issue is a bug in Eclipse Platform UI.
So, we need to report the issue yo BagZilla as well as to send an example to reproduce the issue.

We need to remove the workaround listener after the issue is fixed.