When on a zoom call, if I screen share, the screen I share would be visible to the call, but not to me. For example, I want to share my browser - I get a black space in place of the browser, but if I preview what other zoom participants see, they see my browser.
This video shows my perspective reasonably well. The example starts around 00:00:56.
The video’s suggestion worked. Use
xcompmgr.
I start it in the background when X starts by adding it to ~/.xprofile:
xcompmgr -c &
The default background I have on an empty tmux screen is now gray instead of black, though… so that’s something new. But now I can screenshare!