Bug 123424 browsing perspective does not show some packages in hierarchical mode
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/PackagesViewHierarchicalContentProvider.java
return;
				} else if (!fInputIsProject && input.equals(element)) {
					if (element.exists())
						postRefresh(input);
					else
						postRemove(input);
					return;
				}
			}
		}
		if (kind == IJavaElementDelta.REMOVED) {
			Object input= fViewer.getInput();
			if (input != null && input.equals(element)) {
					postRemove(input);
					return;
				}
		}
		if (element instanceof IPackageFragment) {
			final IPackageFragment frag = (IPackageFragment) element;
			
			
			if (kind == IJavaElementDelta.REMOVED) {
				removeElement(frag);
				return;
			} else if (kind == IJavaElementDelta.ADDED) {
				Object parent= getParent(frag);
				addElement(frag, parent);
				return;
			} else if (kind == IJavaElementDelta.CHANGED) {