This is related to unique chest pieces that change a druids permanent forms.
If a druid clicks portals within a dungeon that transfer them to a new area within the dungeon while wearing Mad Wolf’s Glee or Insatiable Fury unique chest armor it will cause their “animation skeleton” to switch to human while still a wolf or bear form resulting in very odd appearance and animation.
This can only be fixed with a loading screen via leaving dungeon or relogging, currently.