Bug 108102 [Viewers] Project expands in wrong working set
I am using "Show->Working Sets" in the package explorer. Some of the working sets contain the same project: Working Set-1: - Project-A - Project-B - Project-C Working Set-2: - Project-B - Project-C - Project-D If I now double-click "Working Set-1.Project-B" "Project-B" in working set "Working Set-2" will be expanded. If the working set "Working Set-2" itself is not expanded it will seem as if nothing happens, but after expanding "Working Set-2" one can see the changed state of the project. Double-clicking "Working Set-2.Project-B" works as expected.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
*            <code>DROP_MOVE</code>)
	 * @param transferTypes
	 *            the transfer types that are supported by the drop operation
	 * @param listener
	 *            the callback that will be invoked after the drag and drop
	 *            operation finishes
	 * @see org.eclipse.swt.dnd.DND
	 */
	public void addDropSupport(int operations, Transfer[] transferTypes,
			final DropTargetListener listener) {
		Control control = getControl();
		DropTarget dropTarget = new DropTarget(control, operations);
		dropTarget.setTransfer(transferTypes);
		dropTarget.addDropListener(listener);
	}
	/**
	 * Adds the given filter to this viewer, and triggers refiltering and
	 * resorting of the elements.
	 * 
	 * @param filter
	 *            a viewer filter
	 */
	public void addFilter(ViewerFilter filter) {
		if (filters == null) {
			filters = new ArrayList();
		}
		filters.add(filter);
		refresh();
	}
	/**