Hi,
Just spent a while in CoE with group and got to Bjarl. Fight went as usual then at just before 50% HP he suddenly stops hitting the pillars and losing his buff, instead he will just keep running into them until his charge runs out then continue as usual. We had to abandon the run after reviving the NPC and resetting the boss but no luck.
Only seen 1 other post about it posted 1 day ago so I’m guessing this problem was recently introduced through a patch.