I'm experiencing a bug with banishment. I fought four air elementals in the library ruins. I banished one with my cleric and killed the other three. After the game, the combat now restarts constantly, due to the banished air elemental being considered still active, even if it is not present on the screen. When I end my turn on whoever gets the highest initiative, the combat ends and immediately restarts, meaning I am stuck in a combat sequence loop.
The air elemental should have been entirely banished (dead) as it is extra planar, but even if it was just a temporary banish, this loop still shouldn't happen. I'm stuck in the game now and it really sucks.