In the boss fight with Exarchanic Yaseyla, the wamasu will sometimes just randomly spin around with their Overwhelming Lightning cone attack DESPITE being taunted by the tank. This is happening both on normal and veteran difficulty, no matter where the wamasu is positioned (there was a previous bug a couple of years ago where the wamasu would spin around if it stood on uneven terrain). I've done a lot of PUG runs in Sanity's Edge lately, and it's obvious the wamasu is bugged, it keeps happening with almost every group I'm in. I have a taunt add-on, so I can see that it's clearly taunted, and yet it spins around uncontrollably and burns the group.