I think it has something to do with the 'casting' square being on the far side of the monster, and one of the leading squares ends up being the target. Just saw the 4 headed hydra do it in the level 12 treasure hunt. Good thing too, would've killed my priest =)
This definitely happens. Saw it the other day in a custom map. It's . . . amusing, and potentially a fun card idea, but unintended here.
Still happening, and it's obviously only looking at the southwest corner of the figure. I was playing Call the Exterminator, killed the west door of first pair then tried to finish off the east one with a Charge, and it don't take any damage. Also, for all 2x2 chars, the move preview when you hover over a card shows where the southwest corner can go. But when you click the move card, the preview changes to showing where the center of the figure will go.
Still happening: Code: BATTLE LOG: Scenario=Dome of Heads,Room=TEMS (Kalin),RoomID=322546,Msg=The active player is now Gary BATTLE LOG: Player=Gary,Scenario=Dome of Heads,Room=TEMS (Kalin),RoomID=322546,Event=PlayAction,Action=Charge,Instigator=Lernae,Targets= BATTLE LOG: Scenario=Dome of Heads,Room=TEMS (Kalin),RoomID=322546,Player=Gary,Participant=Gary,Actor=Lernae,Event=Move,Origin=(5, 4),StartFacing=(0, 1),Destination=(5, 7),EndFacing=(0, 1) BATTLE LOG: Scenario=Dome of Heads,Room=TEMS (Kalin),RoomID=322546,Msg=Lernae took 3 damage BATTLE LOG: Scenario=Dome of Heads,Room=TEMS (Kalin),RoomID=322546,Msg=Detaching and discarding Magma Spray from Lernae BATTLE LOG: Scenario=Dome of Heads,Room=TEMS (Kalin),RoomID=322546,Msg=Lernae died BATTLE LOG: Scenario=Dome of Heads,Room=TEMS (Kalin),RoomID=322546,Msg=Gary was defeated