It occurs on multiply PC at home but not all. For us(we are 3) it appears that debian10 and debian11 froze after login like you. We have to update to debian12. It seems warmane want to use a new 3d function to display the characters login page. Now that PC are under debian12 or debian13, it works without problem.
So try to update your system.
The game still freezes after a while of playing after the supposed initial fix, sometimes even causing the whole computer to freeze. When this happens only in the game, I can see a popup on the screen with the same message as before, saying:
"“dbghelp.dll” cannot be opened because the developer cannot be verified."
This makes it impossible to play. My friends are experiencing the same issue.