Mac Issue in 5.14

There was the recent update that actually helped fix the whole shop menu being red and strange blackness all over it. Which I'm extremely thankful for but there still seems to be an issue. Sometimes when I press the 'alt+tab' or even 'tab' button on my keyboard by accident or purpose, the entire client will just go into a black screen and I would still hear the music going. So it doesn't crash it just stays on the black screen. It has even gone so far as to freeze my computer which hinders my ability to play.

D:

The recent fixed the larger problems that happened but now I have to be careful not to press the tab button even though I would like to know my enemies scores, items, etc.

Please help. I'm not sure if others are having this issue but it would be nice if there was a small fix for it? I've never had so much problem with a patch before. Thank you!