I tried adding (c as ElementWrapper).setParentEventTarget(this);
in UIBase.addChild() but that crashed my test app with an endless recursion. For future reference, I think the problem is that in this piece of code: goog.events.EventTarget.prototype.dispatchEvent = function(e) { this.assertInitialized_(); var ancestorsTree, ancestor = this.getParentEventTarget(); if (ancestor) { ancestor is undefined. I'll see if I can easily fix the Panel 'close' event relying on bubbling from the title bar. -- View this message in context: http://apache-flex-development.2333347.n4.nabble.com/FlexJS-Bubbling-Problem-tp54796p54823.html Sent from the Apache Flex Development mailing list archive at Nabble.com.