All my Steam games run great if I run them as normal without Gamescope wrapping Steam.

If I run Steam in a Gamescope window then my Windows/Proton games just don’t start. - I press play and a few seconds later I’m back to the “Play” button in Steam.

This is the command:
gamescope --nested-width 1920 --nested-height 1080 --nested-refresh 60 --output-width 1920 --output-height 1080 --steam – steam -tenfoot

I’m running Fedora 38 on an AMD 6900xt with everything vanilla and up to date. Desktop is Gnome/Wayland.

What could be the problem?