Describe the bug
Hey there,
Fresh installation of SteamVR, on startup the Room Setup tool automatically started (as expected on a new setup I assume) and after a brief second it crashes, leaving behind a zombie process. The SteamVR dialog displays "Waiting...".
When I'm trying to start anything else it just says "Could not start SteamVR ... : Another application was already starting."

Expected behavior
Room Setup loads properly.

System Information (please complete the following information):

• Distribution: Arch Linux
• SteamVR version: linux_temp 1.8.21
• Steam client version: steam-runtime_0.20200720.0
• Opted into Steam client beta?: Yes
• Graphics driver version: Mesa 20.1.1
• Gist for SteamVR System Information: https://gist.github.com/nydn/dc5102b459df4256845e72d8cfe24a3a

Additional context

aug 25 20:23:04 desktop systemd-coredump[5596]: [🡕] Process 5496 (steamvr_room_se) of user 1000 dumped core.
                                                 Stack trace of thread 5496:
                                                 #0  0x00007f16cc384615 raise (libc.so.6 + 0x3d615)
                                                 #1  0x00007f16cc36d862 abort (libc.so.6 + 0x26862)
                                                 #2  0x00007f167a37fdeb n/a (/home/dani/.local/share/Steam/steamapps/common/SteamVR/tools/steamvr_room_setup/linux64/steamvr_room_setup_Data/Mono/x86_64/libmono.so + 0x91deb)

Note: Commenters who are also experiencing this issue are encouraged to include the "System Information" section in their replies.