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
* @param widget
     *           the widget
     * @param parent
     *           the parent element
     * @param elementChildren
     *           the child elements, or null
     * @deprecated this is no longer called by the framework
     */
    protected void updateChildren(Widget widget, Object parent,
            Object[] elementChildren) {
        updateChildren(widget, parent, elementChildren, true);
    }
    /**
     * Updates the tree items to correspond to the child elements of the given
     * parent element. If null is passed for the children, this method obtains
     * them (only if needed).
     * 
     * @param widget
     *           the widget
     * @param parent
     *           the parent element
     * @param elementChildren
     *           the child elements, or null
     * @param updateLabels
     *           <code>true</code> to update labels for existing elements,
     *           <code>false</code> to only update labels as needed, assuming
     *           that labels for existing elements are unchanged.
     * @since 2.1
     */
    private void updateChildren(Widget widget, Object parent,