Nav-mesh areas with certain attributes make graphical artifacts.

Describe the bug Some navigation mesh attributes make rainbow-colored artifacts. I have only seen this bug happen with TF_NAV_RED_SPAWN_ROOM and TF_NAV_BLUE_SPAWN_ROOM, but I haven’t fully narrowed down the attributes yet. I’m uncertain if nav_edit affects this bug in any way, but I know tf_show_mesh_decoration does.

This bug does not happen with none-preset or stock/clean TF2, but I have only tested with low preset. I have however verified that this bug works in any TF2 map.

How you encountered the issue

1. Launch TF2.
2. Launch a map.
3. Add a bot
4. Do tf_show_mesh_decoration 1. (Do not use tf_show_mesh_decoration_manual.)

Screenshots With low-preset:

With none-preset:

With stock/clean TF2:

Desktop (please complete the following information):

• mastercomfig version: 9.5.2 (Latest dev branch)
• Preset and addon(s): low-preset, disable-pyroland, no-soundscapes, no-tutorial, and null-canceling-movement.
• Custom values (if any):
• DX level: 90
• Launch options: MANGOHUD_CONFIG="fps_limit=60,no_display" mangohud %command% -novid -nojoy -nosteamcontroller -nohltv -particles 1 -precachefontchars (I tried testing without launch options, but it crashes my game for some reason.)
• Operating system (OS): Linux Mint 20.1 Ulyssa (MATE) x86-64 (Kernel Linux 5.4.0-77-generic)
• Graphics card (GPU): Intel UHD Graphics (x64) @ 33Mhz
• Graphics driver version: Unknown.
• Processor (CPU): Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz (64 bits)
• TF2 on HDD or SSD: SSD
• Memory (RAM) size in MB or GB: 8GiB

[WhyIsEvery4thYearAlwaysBad]

Turns out this craptop can’t handle the Ultra or High presets, as I’ve managed to launch TF2 just fine with medium-high, so that preset is the max I can handle. This bug does seem to also occur on medium-high (with no custom modules.cfg) though:

Also it turns out that my main caption data file is what keeps crashing the game. I need that thing to use most of my binds though, so I’m stuck on what else to do.

[WhyIsEvery4thYearAlwaysBad]

Can you please test this bug with the Ultra preset so we can see if the problem is a graphical command?

TF2 is crashing on me at the moment when I try to launch it for some reason, but when I can get it working again, I will test this bug with the Ultra preset.

EDIT: Actually looking at it further, it’s seems like the low and ultra presets crash the game for me.