Molten Vault doorsand boss bugs

I was just clearing "Molten Vault" and as I was traversing I found that the monks charged staff ability's projectile goes through the doors.

Then when I got to the boss and he went into the phase where he marches through the lava and sends out the waves I was able to stun him with storm wave. This cause the lava waves to stop but he just continued marching. He eventually came out of the lava but got stuck in the marching position indefinitely until I was able to whittle him down. Now he was a tough boss so I'm thankful for the easy win lol. If you need the instance I have it but this should be very easy to recreate.