Mac OS Catalina cmd-tab gives black screen BUG

Bug Report
1

Hi!
(I’m cross-posting here from the EU forum, since this is a specific Mac OS issue)

After the recent update of the MacOS to Catalina HOTS started to have this annoying bug:
everything is fine while in game but as soon as I try to cmd-tab out of the game the screen turns black and nothing else happens. I’m still in the game, I can tell because the sound is still playing the music and the menu sounds (i.E. when pressing escape and triggering the main menu), I can’t cmd-tab to somewhere else or back, it stays black. (update:) It is possible to force-kill the game by cmd-alt-esc, but it is still annoying.

I’ve tried different things already, like reseting the game settings, un- and reinstalling the game, changing resolutions and so on. I run HOTS in full screen usually. I tried to run it in widowed mode, everything works fine. In windowed fullscreen mode this bug reappears though. The only way to get out of that screen right now is a forced shutdown or force-kill.

As a short-term workaround for me, I disabled my usual cmd key I use for tabbing so I don’t do it out of habit, but in the long run I’d love to fix it.

Please tell me what information you need for investigation

2

Same thing here. Performance also seems much worse after updating.

3

Same thing here. Please let me know if you find a solution for this.

4

Hi! What solved it for me was disabling the “automatically switch graphics card” (not sure what it is called in english as mine is in portuguese) in the energy settings. A bit late but hopefully still useful!

5

Well, my solution is to use CMD+M shortcut for switching modes. this removes the black screen by switching to windowed mode, as described here