Bug 6754 Hierarchy does not show selection on F4
Build 20011206 - opened hierarchy on org.eclipse.jface.dialogs.MessageDialog - selected Dialog superclass and hit F4 - the resulting hierarchy was scrolled to the end, with the selection (Dialog) not visible
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
public TypeHierarchyViewPart() {
		fSelectedType= null;
		fInputElement= null;
		
		fHierarchyLifeCycle= new TypeHierarchyLifeCycle();
		fTypeHierarchyLifeCycleListener= new ITypeHierarchyLifeCycleListener() {
			public void typeHierarchyChanged(TypeHierarchyLifeCycle typeHierarchy, IType[] changedTypes) {
				doTypeHierarchyChanged(typeHierarchy, changedTypes);
			}
		};
		fHierarchyLifeCycle.addChangedListener(fTypeHierarchyLifeCycleListener);
		
		fHierarchyProblemListener= null;
		
		fIsEnableMemberFilter= false;
		
		fInputHistory= new ArrayList();
		fAllViewers= null;
				
		fViewActions= new ToggleViewAction[] {
			new ToggleViewAction(this, VIEW_ID_TYPE),
			new ToggleViewAction(this, VIEW_ID_SUPER),
			new ToggleViewAction(this, VIEW_ID_SUB)
		};
		
		fDialogSettings= JavaPlugin.getDefault().getDialogSettings();
		
		fHistoryDropDownAction= new HistoryDropDownAction(this);
		fHistoryDropDownAction.setEnabled(false);