I was thiking about this topic a lot ...
Seems kinda odd bcs in my opinion OP is clearly exploiting this fight, knowingly, purposefully and intentionaly ... and then is complaining about it. O_o
Question i would like to ask is a little harder tho:
What should those Ogres do? O_o
I mean the house is not from destructible models obviously, and they cant really climb the ladder ... they could probably move from that AoE to prevent futher damage, but what would that achieve? You would simply cast the same spell two steppes aside ... AI is basicaly just saving your time.
