Getting Animation locked in Wyrm shape during Tavakai 1st phase

Just encountered this bug twice in a row:

during the fight with Tavakai in the burning hall, when he uses his grappling attack that pulls you towards him:

Being in wyrm form when getting hit by that skill will pull the character towards him and then lock the character in a constant animation (looks like flinching, retching?).
No actions can be performed during this (moving, attacking, skills, etc).

Opening the pause screen, options, and then passive screen will cause the UI to be nonresponsive. Pressing ESC crashed the game (including a visual bug in the UI where the quitting confirmation dialogue box appeared briefly, but without text).

EDIT:
Just repeated this a couple of times. Tavakai will sometimes stun me out of the animation lock, sometimes it can take quite a while.
The UI bugging out has not happened to me since the first incident of the bug, despite me trying to reproduce it.