I have no idea what else I did. I know the start panel user pane animation didn't work until I changed the setting in skinstudio from blur to the normal per-pixel setting.
I tried a little test. I removed the caption border and maximized border in the per-pixel section to see if it would still animate but nothing. When I re-added the caption per-pixel border it animated again. So you tell me what it is. All I know is if I remove it, it stops working, put it back and it's fine??