https://bugs.winehq.org/show_bug.cgi?id=19433
--- Comment #19 from exposight exposight@gmail.com --- Have to confirm this still happens, and in exactly same way: contact an enemy players, and in a few seconds there is the mismatch popup.
Verified on the very same installation on Windows: with two players and two bots, we played until the end. If there is a Linux machine in the game on the same map and same game setup, then the mismatch happens as soon as there is a first fight.