HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

Here are some more bugs that occurred:
- The hero duplicated in the metro while transferring troops (either during the transfer or after a pause - I don't remember), this never happened in SoD. Moreover, the game is a tournament game, and the save needs to be fixed somehow. The hero was from the dungeon and was released a week earlier.
- In a paired game, troops and artifacts cannot be transferred to an ally during the ally's turn.

+1, it happened once in the metro, the hero duplicated, if needed, I have the save...

Today, the hero duplicated again (fortunately, not the main hero, I'll fire him :D) in the teleport, which was also the case in the first one. So, when building a chain and transferring troops, you need to be more careful (the bug occurred specifically in the teleport in the metro while transferring troops without leaving it, and the second hero ran around on the other side).