Hi, welcome to the forum,,,Yes this sort of thing can happen quite a lot :)
My original players were the worst for it I think - they sometimes got into deadlock situations due to gaps in the AI.
The 2009 variants of my players were I hope a bit better..
vexer is normally better than my players at avoiding drawn games, but here those 3 players seem to be acting rationally - nothing to be gained,by attacking the other players, so one might wonder how much the same situation occurs between human players?