[Linux] Game crash in menu screen.

[ianwijma]

Your system information

• System information from steam (Steam -> Help -> System Information) in a gist: https://gist.github.com/ianwijma/ac5f38217e5b367ebe6b816e6d7d286d
• Have you checked for system updates?: [Yes/No]

Please describe your issue in as much detail as possible:

Describe what you expected should happen and what did happen. Please link any large pastes as a Github Gist.

Steps for reproducing this issue:

1. After a Death Match, when alt-tabbing or just opening the game, it crashes and I get the following error

I have tried to validate the local files multiple times with effect.

Edit: It crashed again right after opening a case, just as I got the popup of the item unboxes.