Bug 119827 Window working set has strange name in type hierarchy view
Build id: I20051206-1200 Don't know if this is JDT/UI or Platform/UI but when the window working set is selected a strange name is presented in the title bar of the view (see attached screen shot)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
fAdditionalMappings.put(element, l);
				}
				
				if (!l.contains(item)) {
					l.add(item);
					fResourceToItemsMapper.addToMap(element, (Item)item);
				}
			}
		}
		protected void unmapElement(Object element, Widget item) {
			List l= (List)fAdditionalMappings.get(element);
			if (l == null) {
				super.unmapElement(element, item);
				return;
			}
			if (findItem(element) == item) {
				super.unmapElement(element, item);
				if (l != null && l.size() >= 1) {
					
					
					Widget widget= (Widget)l.remove(0);
					
					
					fResourceToItemsMapper.removeFromMap(element, (Item)widget);
					super.mapElement(element, widget);
				}
			} else {
				l.remove(item);
				fResourceToItemsMapper.removeFromMap(element, (Item) item);
			}