I'm not sure why this is, but, when I complete certain quests, I often find myself teleport to the Hunter's Guild, then immediately walk in a random direction as the quest NPC is talking. I can't stop my character during this. Sometimes I'll end up walking towards the principal's teleporter, other times I end up on a wall. I eventually break free of this, but, it seems to end at different intervals. One quest this seems to happen often in is Episode 1's Max Attack E. I don't ever recall it happening in an Episode 2 or 4 quest, but I'll start taking better note.