1) Shapeshifting timer bug.
If you exit the werewolf form 2-3 second before the expiration time (you may want to do this, since stun during the shape change can happen in the middle of the AoE from the boss) - approximately 10-15% of the time the next time you enter the werewolf shape, the timer will be at that time, on which you left the last time (2 seconds before werewolf end).
2) Skill/animation bug.
In about 20% of cases when I try to use a skill different from howling(Claws Of Life, Pounce) or just press a block, roll-dodge or move - there is an animation of howling. Its not Hircine's Bounty or Roar skills cast, its just animation when my wolf just stands, instead of blocking the boss hit or dodge it or doing something to avoid death.
These 2 bugs are with me and my brother who lives in another home, has a other computer, an Internet provider, PC settings and ESO key bindings.
3) The skill does not work, although the required resource is full.
This bug I personally did not notice, but my brother repeatedly encountered the inability to use Hircine's Rage although he had 100% mana.
Personally, I do not understand how the werewolf could be broken if there were no changes to the werewolves in Morrowind patch.
No more levels and skills, only degradation!