Cannot join BattlEye enabled servers on Linux and Proton

[zrrifle 0]

Hello! I've installed ArmA 3 via Steam and use Proton on Fedora to play the game. It works fine, except I cannot join any BattlEye enabled server.

 

Battleye is enabled and the Proton BattlEye Runtime is installed. When I cannot to a BattlEye enabled server such as the official BI ones, I see this weird looking screen:

 

https://imgur.com/l6TzIqc (ignore the underwater background that changes, but please notice the two arrows in the top left part of the screen)

 

In that screen I can only press Enter, Space or Esc to return to the server list.

 

This happens in any case: no mods, with mods, from the Windows and Linux launchers, etc. I can join non-BattlEye servers correctly and play there.

 

Can someone help me understand the problem?