Bug 62686 Missing classes in hierarchy [type hierarchy]
I200405180816 Open type hierarchy on IWorkbench. The implementing class Workbench is not shown. You have to press 'Show subtype hierarchy' to see it.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TraditionalHierarchyViewer.java
public TraditionalHierarchyViewer(Composite parent, TypeHierarchyLifeCycle lifeCycle, IWorkbenchPart part) {
		super(parent, new TraditionalHierarchyContentProvider(lifeCycle), lifeCycle, part);
	}
	
	/*
	 * @see TypeHierarchyViewer#getTitle
	 */	
	public String getTitle() {
		if (isMethodFiltering()) {
			return TypeHierarchyMessages.getString("TraditionalHierarchyViewer.filtered.title"); 
		} else {
			return TypeHierarchyMessages.getString("TraditionalHierarchyViewer.title"); 
		}
	}
	/*
	 * @see TypeHierarchyViewer#updateContent
	 */		
	public void updateContent(boolean expand) {
		getTree().setRedraw(false);
		refresh();