Bug 61878 Package explorer is filtering out plugin dependencies [package explorer]
Build 20040506 When expanding the Plug-in Dependencies container, it is counter-intuitive to hide project dependencies. These are shown in the build path wizard itself, when you expand this container. I would expect to see them all the time.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerContentProvider.java
private void postRemove(final Object element) {
		postRunnable(new Runnable() {
			public void run() {
				Control ctrl= fViewer.getControl();
				if (ctrl != null && !ctrl.isDisposed()) {
					fViewer.remove(element);
				}
			}
		});
	}
	
	private void postProjectStateChanged(final Object root) {
		postRunnable(new Runnable() {
			public void run() {
				fPart.projectStateChanged(root);
			}
		});
	}
	private void postRunnable(final Runnable r) {
		Control ctrl= fViewer.getControl();
		final Runnable trackedRunnable= new Runnable() {
			public void run() {
				try {
					r.run();
				} finally {
					removePendingChange();
				}
			}
		};
		if (ctrl != null && !ctrl.isDisposed()) {