Your system information

• Steam client version (build number or date):

• Distribution (e.g. Ubuntu): archlinux

• Opted into Steam client beta?: [Yes/No] no

• Have you checked for system updates?: [Yes/No] yes

• Steam Logs: [generate by running this command in a terminal tar -zcvf ~/Desktop/steam-logs.tar.gz ~/.steam/steam/logs]
  steam-logs.tar.gz

• GPU: Nvidia

Please describe your issue in as much detail as possible:

slay the spire will not launch without running steam with "steam -compat-force-slr off" launch option

this option disables the 'Steam for Linux runtime 1.0 (scout)' enverment and uses the system libs instead.
because it works with system libs it probably needs a lib not included in 'Steam for Linux runtime 1.0 (scout)', my guess is that since it needs xrandr, and since xrandr is a rare hard dependency for a game its missing from that runtime env?

Steps for reproducing this issue:

1. launch steam normally on linux
2. make sure slay the spire isn't using proton
3. click play on slay the spire
4. watch it fail to launch.