I found a bug: If you swipe down a screen to close an app, it will fade out (new feature of 1.2) to show you that the app is closing. But when you swipe it quickly back to the top (when the window is already swiped away) it will minimize instead of closing it

Edit: I uploaded a video showing how to preform the bug
http://youtu.be/ufsoSd_Bop4