[BUG] vrcompositor segfault on exit if a scene application was opened at any point (tested with hello_xr)

[ImSapphire]

Describe the bug
vrcompositor segfaults when exiting SteamVR if a scene application has been opened. If I open SteamVR, then close it without launching any scene apps, the crash does not occur.

To Reproduce
Steps to reproduce the behavior:

1. Launch SteamVR
2. Launch a scene application (tested with hello_xr -g Vulkan2)
3. Close scene application
4. Exit SteamVR
5. vrcompositor segfaults

Expected behavior
vrcompositor exits cleanly

System Information (please complete the following information):
Please use the latest Steam beta client and SteamVR beta for your bug reports!

• Steam client version (build number or date): 1784145295
• SteamVR version: 2.17.4
• Distribution (e.g. Ubuntu): NixOS
• Steam runtime diagnostics: steam-runtime-diagnostics.txt
• Steam and SteamVR logs: steam-logs.tar.gz
• Minidumps: folder doesn't exist :(

Additional context
systemd journal at the time of the crash: vrcompositor-exit-segfault.txt