When using YUI TaskNode, when clicking on labels, my listener on labelClick isn't called?

How come when using a YUI tree using TaskNode (illustrated below) my listener on labelClick isn't called, while it is called if I create the same tree with TextNode?

This is most likely something that used to work. The YUI code in TaskNode.js calls TextNode.onLabelClick() which does just a return false. This will work if you modify TaskNode.js and instead of calling node.labelClick(node), call tree.fireEvent('labelClick', node). Specifically, replace:

sb[sb.length] = ' onclick="return ' + getNode + '.onLabelClick(' + getNode +')"';

With:

sb[sb.length] = ' onclick="' + getNode + '.tree.fireEvent(\'labelClick\',' + getNode +'); return false;"';