martin I am using waterfox 56.2.0, could you confirm this one is good for you too?
Yes, Waterfox works perfectly fine for me. Did not know it even existed. Thanks for the pointer!
Firefox Quantum is fine when it is minimized, but not when it is behind other windows.
Same goes for Chrome 70.
This is unfortunately not the case for Visual Studio Code and Slack Desktop version. Both strain also when minimized.