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
tree.setRedraw(false);
            tree.setRedraw(true);
        }
    }
    /**
     * Updates the "+"/"-" icon of the tree node from the given element. It
     * calls <code>isExpandable</code> to determine whether an element is
     * expandable.
     * 
     * @param item
     *           the item
     * @param element
     *           the element
     */
    protected void updatePlus(Item item, Object element) {
        boolean hasPlus = getItemCount(item) > 0;
        boolean needsPlus = isExpandable(item, null, element);
        boolean removeAll = false;
        boolean addDummy = false;
        Object data = item.getData();
        if (data != null && equals(element, data)) {
            
            if (hasPlus != needsPlus) {
                if (needsPlus) {
					addDummy = true;
				} else {
					removeAll = true;
				}
            }