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/AbstractTreeViewer.java
*           subtrees are ignored
     * @return the next item, or <code>null</code> if none
     */
    protected Item getNextItem(Item item, boolean includeChildren) {
        if (item == null) {
            return null;
        }
        if (includeChildren && getExpanded(item)) {
            Item[] children = getItems(item);
            if (children != null && children.length > 0) {
                return children[0];
            }
        }
        
        
        Item parent = getParentItem(item);
        if (parent == null) {
            return null;
        }
        Item[] siblings = getItems(parent);
        if (siblings != null){
        	if(siblings.length <= 1) {
				return getNextItem(parent, false);
			}
        	
        	for (int i = 0; i < siblings.length; i++) {
                if (siblings[i] == item && i < (siblings.length - 1)) {
                    return siblings[i + 1];
                }
            }