I’ve recently the latest haxe rc along with develop branches of OpenFL and Lime and all of my classes generated from a swf library extend null rather than MovieClip.
I haven’t touched this project in 11 months so it was stable with 8.4-ish. I’m using
<library path="Assets/Test Layout.swf" id="layout" generate="true" preload="true" />
Let me know if you need any more info, I’m gonna try making a test repro project tomorrow morning. Has anyone else tried using swf assets with latest? Anyone else seeing this?