Bug 275171 [Contributions] Customize Perspective action breaks editor pinning action
Using M7, I enabled editor pinning (i.e. Reuse editor) and pinned an editor using an action in the toolbar. I then disabled editor pinning ad then opened the customized perspective dialog. After this, enabling/disabling editor pinning does not make the Pin Editor action reappear.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
showViewMenuAction = ActionFactory.SHOW_VIEW_MENU.create(window);
        register(showViewMenuAction);
        showPartPaneMenuAction = ActionFactory.SHOW_PART_PANE_MENU
                .create(window);
        register(showPartPaneMenuAction);
        nextEditorAction = ActionFactory.NEXT_EDITOR.create(window);
        register(nextEditorAction);
        prevEditorAction = ActionFactory.PREVIOUS_EDITOR.create(window);
        register(prevEditorAction);
        ActionFactory.linkCycleActionPair(nextEditorAction, prevEditorAction);
        nextPartAction = ActionFactory.NEXT_PART.create(window);
        register(nextPartAction);
        prevPartAction = ActionFactory.PREVIOUS_PART.create(window);
        register(prevPartAction);
        ActionFactory.linkCycleActionPair(nextPartAction, prevPartAction);
        nextPerspectiveAction = ActionFactory.NEXT_PERSPECTIVE
                .create(window);
        register(nextPerspectiveAction);
        prevPerspectiveAction = ActionFactory.PREVIOUS_PERSPECTIVE
                .create(window);
        register(prevPerspectiveAction);
        ActionFactory.linkCycleActionPair(nextPerspectiveAction,
                prevPerspectiveAction);
        activateEditorAction = ActionFactory.ACTIVATE_EDITOR
                .create(window);
        register(activateEditorAction);
        maximizePartAction = ActionFactory.MAXIMIZE.create(window);
        register(maximizePartAction);
		minimizePartAction = ActionFactory.MINIMIZE.create(window);
		register(minimizePartAction);