Easy fix, make the AI not stand in fire while out of combat not just in.

Short version in act one I help the 2 numpty's in the cave against the knolls. I had my druid's spike growth down. The entire fight they avoid stepping in it. As soon as the fight ended one of the 2 morons decides to walk into it getting hurt and go hostile.
This should not be an issue. If the AI says "That's a bad place to stand." during combat why does that logic get skipped out of combat?