Bug 33151 [Navigator] F2 in Outline does not work
RC1 build - new workspace - new Java project, say no to perspective switch prompt - new Java class Test - position cursor over Test class name in editor - F2 - you get the popup - select class Test in Outline - F2 - no effect - choose Edit / Show Tooltip Description - it works
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/navigator/MainActionGroup.java
ResourceNavigatorMessages.getString("ToggleLinkingAction.text")); 
		toggleLinkingAction.setToolTipText(
			ResourceNavigatorMessages.getString("ToggleLinkingAction.toolTip")); 
		toggleLinkingAction.setImageDescriptor(getImageDescriptor("elcl16/synced.gif"));
		toggleLinkingAction.setHoverImageDescriptor(getImageDescriptor("clcl16/synced.gif"));
	}
	
	/**
	 * Makes the sub action groups.
	 */
	protected void makeSubGroups() {
		gotoGroup = new GotoActionGroup(navigator);
		openGroup = new OpenActionGroup(navigator);
		refactorGroup = new RefactorActionGroup(navigator);
		IPropertyChangeListener workingSetUpdater = new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				String property = event.getProperty();
				
				if (WorkingSetFilterActionGroup.CHANGE_WORKING_SET.equals(property)) {
					IResourceNavigator navigator = getNavigator();
					Object newValue = event.getNewValue();
					
					if (newValue instanceof IWorkingSet) {	
						navigator.setWorkingSet((IWorkingSet) newValue);
					}
					else 
					if (newValue == null) {
						navigator.setWorkingSet(null);
					}
				}