https://bugs.winehq.org/show_bug.cgi?id=43926
--- Comment #3 from Evgenii Burmentev [:virus_found] vir.found@gmail.com --- (In reply to Evgenii Burmentev [:virus_found] from comment #2)
Therefore I think this bug is exclusive to the Steam version of Medieval Total War Gold.
It is exclusive to the current Steam version of MTW. If I choose "previous version" in game's beta section, it runs without this bug.
So those users, affected by bug, should use this workaround for now.