Steam overlay broken for native Linux games on Wayland

[cueki]

Your system information

• Steam Runtime Version: 1.0.20260218.209096

• Distribution (e.g. Ubuntu 18.04): Arch Linux (rolling), kernel 6.19.6-arch1-1

• Link to your full system information: https://gist.github.com/cueki/cc2e15455739fc6b5e199ed641df48a5

• Have you checked for system updates?: Yes

• What compatibility tool are you using?: Steam Linux Runtime

• What versions are listed in steamapps/common/SteamLinuxRuntime/VERSIONS.txt?
  depot 1.0.20260218.209096
  LD_LIBRARY_PATH 1.0.20260218.209096 scout 1.0.20260218.209096
  scripts 0.20260218.0

• What versions are listed in steamapps/common/SteamLinuxRuntime_soldier/VERSIONS.txt?
  depot 2.0.20260316.216280
  pressure-vessel 0.20260313.0
  scripts 0.20260313.0
  soldier 2.0.20260316.216280

• What versions are listed in steamapps/common/SteamLinuxRuntime_sniper/VERSIONS.txt?
  depot 3.0.20260316.216289
  pressure-vessel 0.20260313.0
  scripts 0.20260313.0
  sniper 3.0.20260316.216289

Please describe your issue in as much detail as possible:

The Steam overlay is broken for native Linux games running inside SLR sniper on a Wayland session, after today's update, gameoverlayui seemingly never connects. The screen briefly greys out twice during game launch (when the "press Shift+Tab" notification would appear), then the overlay process dies.

Starting the game with the launch option SDL_VIDEODRIVER=x11 %command% resolves this and the overlay works normally. Proton games are unaffected due to XWayland.

Steps for reproducing this issue:

1. Run a Wayland session (KDE Plasma in my case)
2. Launch a native Linux game (eg. Team Fortress 2)
3. Shift+tab no longer does anything

[kisak-valve]

Hello @cueki, this issue is already being tracked at ValveSoftware/steam-for-linux#8020. Closing as a duplicate.

[cueki]

I'm a little confused, games now default to Wayland, breaking the overlay OOTB for all native Linux games on Wayland sessions. Is this not a regression?

Thanks.