The Survivalists (897450) - Player character is not rendered

**Game information**
The Survivalists (897450)
(free demo available)

**Distribution name and version where applicable**
Fedora Silverblue 35

**Flatpak info**
```
$ flatpak --version
Flatpak 1.12.2
$ flatpak --gl-drivers
default
host
$ flatpak info org.freedesktop.Platform/x86_64/21.08
Version: 21.08.7
$ rpm -qa "mesa*"
21.3.2 (host mesa)
```

**Problem description**
Player character is not rendered. (https://github.com/ValveSoftware/Proton/issues/5460#issuecomment-1003334485)

- The issue is reproduciable on latest runtime mesa (21.3.1) and mesa-git extension.
- The issue is reproduciable on official Proton experimental, official Proton 6.3-8 and community Proton 6.3-7 (tested using clean prefixes)
- Based on Matrix feedback the issue is only reproduciable on AMD/mesa so far. Not reproduciable on Intel/mesa or Nvidia.
- I was able to reproduce the issue on an AMD RX6800 GPU and a separate system using an AMD 3500U APU.

**Proton logs**
RPM Steam: [steam-897450-rpm.log](https://github.com/flathub/com.valvesoftware.Steam/files/7797326/steam-897450-rpm.log)
Flatpak Steam: [steam-897450-flatpak.log](https://github.com/flathub/com.valvesoftware.Steam/files/7797325/steam-897450-flatpak.log)

**Noticeable (but possibly harmless/unrelated) differences in the log**
- Flatpak Steam logs `/usr/lib/i386-linux-gnu/GL/default/share/libdrm/amdgpu.ids: No such file or directory`
- Flatpak Steam logs `get_name_record_codepage encoding 20 not handled, platform 1.`
- RPM Steam forces `System WINEDLLOVERRIDES: winemenubuilder.exe=d`

**Does this issue reproduce with native Steam**
No. The issue is not reproduciable with rpm Steam on any tested mesa package (21.3.1, 21.3.2 and mesa-git).