bug#48268: 28.0.50; Blank screen when switching virtual desktops or when starting exwm (regression from 483c5e9)

[martin rudalics]

> I use exwm as my window manager. Since commit 483c5e9, my session starts
> up as a blank screen (emacs responds to keyboard shortcuts, though). I
> have heard user reports (at [0]) that switching virtual desktops on
> xmonad also leads to a blank screen, and I believe this is another
> instance of the same bug.
>
> The problem happens without native compilation enabled. I have verified
> that reverting commit 483c5e9 fixes the problem.
>
> Best,
> Mauricio
>
> [0] https://github.com/nix-community/emacs-overlay/issues/146

Thank you for the report.  We are investigating this problem already in

https://lists.gnu.org/archive/html/emacs-devel/2021-05/msg00217.html

and I will send you a patch as soon as we have found a working solution.

martin