Hi, I'm a new deepin user that's having some issues with tabbing out of game(video below shows the issue). When in game and pressing Alt + Tab to switch applications steam freezes, chrome freezes, and other default skinned applications do not have close, minimize, or maximize buttons. As well as turning the taskbar and background black. The only way around this seems to be logging out and logging back in or restarting my computer. If this is something specific I'm missing any help is appreciated. If it's a glitch that other users are having issues with as well I hope this is the right place to post bugs, otherwise I would greatly appreciate if I could be directed to where it can be reported. Thank you in advance.

Video showing what happens when tabbing out of game.
http://www.youtube.com/watch?v=1ABKnW0MgLk