Infinite loop while AI turn

I’m new to VCMI.

I managed to install the game on my Ubuntu 14.04 LTS box. I used the official (?) launchpad repo.

I’ve noticed a problem. In one of my games, after I click the “end turn” button, the game hangs. In console, I can see many the “Another allied hero stands in our way” messages. I have a savegame, and this problem can be always reproduced.

What should (can) I do about this bug? Is it a known issue, or should it be reported in some bug tracker?