Bug 229351 [Contributions] Customize Perspective dialog removes menu entires
I20080429-0100. (works in 3.4 M6a) 1. start fresh workspace 2. verify that the 'Edit' menu contains, e.g. Cut, Copy, Paste 3. Window > Customize Perspective... 4. click 'Cancel' (alternatively you can go and edit, then click 'OK') 5. observe: menu entries are gone from the 'Edit' menu The user has to restart in order to get the menu working again.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
return menu;
    }
    /**
     * Adds the perspective actions to the specified menu.
     */
    private void addPerspectiveActions(MenuManager menu) {
        {
            String openText = IDEWorkbenchMessages.Workbench_openPerspective;
            MenuManager changePerspMenuMgr = new MenuManager(openText,
                    "openPerspective"); 
            IContributionItem changePerspMenuItem = ContributionItemFactory.PERSPECTIVES_SHORTLIST
                    .create(getWindow());
            changePerspMenuMgr.add(changePerspMenuItem);
            menu.add(changePerspMenuMgr);
        }
        {
            MenuManager showViewMenuMgr = new MenuManager(IDEWorkbenchMessages.Workbench_showView, "showView"); 
            IContributionItem showViewMenu = ContributionItemFactory.VIEWS_SHORTLIST
                    .create(getWindow());
            showViewMenuMgr.add(showViewMenu);
            menu.add(showViewMenuMgr);
        }
        menu.add(new Separator());
        menu.add(editActionSetAction);
        menu.add(savePerspectiveAction);
        menu.add(resetPerspectiveAction);
        menu.add(closePerspAction);
        menu.add(closeAllPerspsAction);
    }
    /**