I know a few different ways to place two heroes of the same class in a tavern... :) But the computer doesn't know any! That's what we were talking about initially - don't twist things... ;)
Well, the computer isn't Radik ;), it seems it doesn't know these methods either...
And the conversation wasn't entirely about this topic ;), but never mind...
In the map settings, in the cities, you might have the "Guest Hero" ("Hero Visit") option enabled, and it's set to this specific hero. Check that. Otherwise, I don't know what to say.
What does "In the map settings, in the cities" mean? There's no such section in the settings, where is this option located more specifically?