report a bug

[slobber]

first, it's nice. but after you open all 3 level of the tree, then collapse the top level node, the level 3 node don't be collapsed.

[Guillaume Malartre]

I did a hack to correct that bug for a 3 level tree.
In treegrid.as
protected function treeGridNodeClosed(event:TreeGridNodeEvent):void {
    var cursor:IViewCursor = collection.createCursor();
    var node:ITreeGridNode = event.node;
    while (!cursor.afterLast) {
        if (cursor.current == node) {
            cursor.moveNext();
            for each (var childNode:ITreeGridNode in node.children) {
                for (var x:Object in node.children) {
                    if (node.children[x].open)
                        node.children[x].toggleOpen()
                        for (var i:Number = node.children[x].children.length;i > 0;i--) {
                            cursor.remove();
                        }
                    }
                }
                cursor.remove();
            }
            return;
        } else {
            //trace("else")
        }
        cursor.moveNext();
    }
}