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/WorkspaceActionGroup.java
(!hasOpenProjects || !hasClosedProjects || 
				 hasBuilder || isProjectSelection)) {
			Object next = resources.next();
			IProject project = null;
			
			if (next instanceof IProject)
				project = (IProject) next;
			else if (next instanceof IAdaptable)
				project = (IProject) ((IAdaptable) next).getAdapter(IProject.class);
			
			if (project == null) {
				isProjectSelection = false;
				continue;
			}
			if (project.isOpen()) {
				hasOpenProjects = true;
				if (hasBuilder && !hasBuilder(project))
					hasBuilder = false;					
			} else {
				hasClosedProjects = true;
				hasBuilder = false;
			}
		}	
		if (!selection.isEmpty() && isProjectSelection && 
			!ResourcesPlugin.getWorkspace().isAutoBuilding() && hasBuilder) {
			
			buildAction.selectionChanged(selection);
			menu.add(buildAction);
		}
		if (!hasClosedProjects) {