System: Windows XP SP3
Video card: ATI Radeon HD 3400
You forgot to automatically expand a new created subfolder. Everywhere else you expand a new created subfolder.
That's happening in the animations dialog.
Befor
<img src="http://img818.imageshack.us/img818/2030/befor.png" border="0" />
After
<img src="http://img716.imageshack.us/img716/466/afterzo.png" border="0" />
Look at the top left corner the new created subfolder lost his focus and you see that little rectangle.
How to fix?
Just auto expand the new subfolder <img src="smileys/smiley20.gif" border="0" align="middle" />