Teleport between zone doesn't work

Hello,

A few weeks ago, I have reported a bug where I wasn't automatically teleported outside of a Alva's mission.
I was cruelly locked in a empty room by the vaals and can't vandalize their temple accross time anymore :'(

Today, this bug also happened during a fight against an Elder's Guardian.
At 50% of his HP, I wasn't teleported in the second area of the fight.
I agree that is a very clever move, from the Elder, to teleport only his guardian out of combat, but it's a little more complicated to complete the map in this condition.

Thank you by advance.