Opening the door around setpos 10842.50 -9733.17 2462.03 causes my game to crash. This doesn't crash when I tested with proton 6.3-4. This crashes with and without -vulkan as well with Steam Linux Runtime. I tested without -vulkan enabled without any addons except glubtastic 4 enabled, but the addons I had enabled with -vulkan enabled were just maps. I could see no relevant console errors before opening the door. This also crashes if someone else opens the door. I can noclip through the door and around it and into the room with no crash. I also get a lot of lag on the map and freezes for several seconds if moving to a point causes a lot of stuff to load at once. However, if I noclip into the door and go near the left side of it while in the door, I may crash. In another session I also crashed in the door/void, but it was closer to the right. My game regularly froze for several seconds going in and out of the door via noclip and into the surrounding void.

Dmesg shows:
[ 6488.914906] hl2_linux[11854]: segfault at 0 ip 00000000f7d349e7 sp 00000000fff5fa7c error 4 in libc-2.32.so[f7cc5000+12d000]
[ 6488.914955] Code: 74 28 38 28 0f 84 97 00 00 00 40 83 f1 03 74 1a 38 28 0f 84 89 00 00 00 83 c0 01 83 e9 01 74 0a 38 28 74 7d 83 e8 0f 83 c0 10 <8b> 08 ba ff fe fe fe 01 ca 73 59 31 ca 81 ca ff fe fe fe 42 75 4e

I'm just giving this information in case you know something and/or could pinpoint something causing this in the map. I can post this on the official github issue tracker if not.

Photo of door that causes a crash when opening:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2520589958

Copy of console when standing in front of door. The stuck errors are due to the survivors getting stuck in the ceiling after setpos, but I assure I have tested this without the survivors setpos'ing into the ceiling and experienced a crash:
https://pastebin.com/SanhB4ap

L4D2 Version:
Version 2.2.1.3 (left4dead2)
Network Version 2.1.0.0
Exe build: 00:51:56 May 20 2021 (8230) (550)

System information:
https://pastebin.com/zZUm6CrT