I've the same Problem. The scree is half to see. I've put an image in the end of the post. The mouse ist not working at all.
Version: I Thinks it's Beta 11. I installed it today, but it's not possible to navigate with the mouse at all. So it's not possible to change the options. An navigation via keyboard was not succsessfull.
To stop the programm I have to kill it via terminal
I'm using multiple screens, maybe the fullscreen is crashing somewhere there.