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
Item[] items = getItems(ti);
                for (int i = 0; i < items.length; i++) {
                    if (items[i].getData() != null) {
                        disassociate(items[i]);
                        items[i].dispose();
                    } else {
                        if (needDummy && !haveDummy) {
                            haveDummy = true;
                        } else {
                            items[i].dispose();
                        }
                    }
                }
                
                if (needDummy && !haveDummy) {
					newItem(ti, SWT.NULL, -1);
				}
                return;
            }
        }
        if (childElements.length > 0) {
        	
            Object[] filtered = filter(parentElementOrTreePath, childElements);
			ViewerSorter sorter = getSorter();
			if(sorter != null) {
				if (sorter instanceof TreePathViewerSorter) {
					TreePathViewerSorter tpvs = (TreePathViewerSorter) sorter;
					if (path == null) {
						path = internalGetSorterParentPath(widget, sorter);