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
* 			the current size of the collection
     * @return the index to use when inserting the element.
     * 
     */
	
    /**
     * Returns the index where the item should be inserted.
     * 
     * @param parent
     *           The parent widget the element will be inserted into.
     * @param element
     *           The element to insert.
     * @return int
     */
    protected int indexForElement(Widget parent, Object element) {
        ViewerSorter sorter = getSorter();
        TreePath parentPath = internalGetSorterParentPath(parent, sorter);
		
		Item[] items = getChildren(parent);
		int count = items.length;
        if (sorter == null) {
			return count;
		}
        int min = 0, max = count - 1;
        while (min <= max) {
            int mid = (min + max) / 2;
            Object data = items[mid].getData();
            int compare = internalCompare(sorter, parentPath, data, element);
            if (compare == 0) {