I've noticed this for a long time now, where enemies 'dash' and I see them move but they end up back in their starting position. It doesn't always happen, but it usually happens upon auto exploring into two goblins at the edge of LoS. Wondering if it could be somehow based on when Dash is the only action taken? I'm guessing this might be a finicky bug.
This is the first time I've seen it happen with one of MY demons though- occurred in pic- the goblin dashed, I saw it move to somewhere, and it ended up in the same spot where it was loyally following behind me.
Sent you what I think is the zipped save file