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
* if an identical listener is not registered.
	 * 
	 * @param listener
	 *            a double-click listener
	 */
	public void removeDoubleClickListener(IDoubleClickListener listener) {
		doubleClickListeners.remove(listener);
	}
	/**
	 * Removes the given filter from this viewer, and triggers refiltering and
	 * resorting of the elements if required. Has no effect if the identical
	 * filter is not registered.
	 * 
	 * @param filter
	 *            a viewer filter
	 */
	public void removeFilter(ViewerFilter filter) {
		Assert.isNotNull(filter);
		if (filters != null) {
			
			
			for (Iterator i = filters.iterator(); i.hasNext();) {
				Object o = i.next();
				if (o == filter) {
					i.remove();
					refresh();
					if (filters.size() == 0) {
						filters = null;
					}
					return;