When playing on Linux through Steam Play Proton, Easy Anti-Cheat prevents others from joining your hosted game or you from joining another host. When attempting to join another game, one is greeted with the error message “You are not allowed to connect. Either this or the other game instance is untrusted by the anti cheat system” (see screenshot).
When hosting a game, no other player can join your game; the chat log gets filled with “Player X is joining the game” and “Player X has left the game” messages (see screenshot).
When finishing a hosted game, one is greeted by an error message stating “Backend rejected the challenge response” and character progression and items are lost.
Steps to Reproduce:
- Launch Vermintide 2 on Linux through Steam Play Proton
- Join a game OR start a hosted game
- Be greeted with an error message when attempting to join OR watch your chat log get spammed with “Player X left the game” messages when hosting.
Reproduction Rate (Choose One):
Steam Play Proton version: Proton 3.16-4 Beta