Bug 88993 [Viewers] CCE in AbstractTreeViewer.indexForElement(..)
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);
                } else {
                    
                    tree.redraw();
                }
                return;
            }
        }
        if (childElements.length > 0) {
            Object[] filtered = filter(childElements);
            for (int i = 0; i < filtered.length; i++) {
                createAddedElement(widget, filtered[i]);
            }
        }
	}