[TF2] [Linux] Crashes on specific maps when doing specific actions

[Frozenreflex]

Linux Mint 22.1, RX 6600XT, Ryzen 7 5800X3D, non-Flatpak Steam

On specific maps, doing specific things while facing in specific directions will cause the game to have a random chance of crashing.

Examples include:
On Upward, going up the spiral ramp while facing toward the forward track
On Snowycoast, facing toward the fence and opening for the first point
On Barnblitz, as an attacker, facing toward the general direction of the first point
(generally facing toward the objective, in other words)

In some of these cases, I've managed to reduce the chance of crashing by facing in different directions
For Snowycoast, going toward the right side flank and facing away from the fence on the way there can reduce the chance of crashing, I've never gotten a crash on Upward when I go up the slope closer to the spawn, and doing the first point on Barnblitz facing backwards has prevented crashing.

Facing backwards, of course, makes it infinitely more difficult to shoot the other guy.

Disabling all mods (ToonHUD, first person animations, some custom sound effects, Toon vfx), using -autoconfig to reset the config, and verifying game files have not fixed the issue.

Of note, I mostly play on servers with a player limit over default (Shounic's 100 player server and 1000 Uncles), so I'm not sure if it contributes to the issue

I've attempted to figure out why it crashes on my own, but I haven't been successful. It's probably something stupid that I'm doing wrong, because I've never heard of anyone else having this issue.

This dump should be from a crash on a match on Snowycoast on the 1000 Uncles server

crash_20250121011249_3.dmp.zip

[kisak-valve]

For reference, the attached minidump is a SIGSEGV in vguimatsurface.so.