Trial of the Sekhemas - Ashar the Sand Mother Bug - Unattackable on Opposite Side of Exit

Had plenty of honour to kill her and then she resurfaced on the opposite side of the exit gate, rendering her unattackable. Had to trigger traps to kill myself just to exit the encounter, robbing me of my Ascendancy Points and loot :(

https://www.youtube.com/watch?v=YTO01NDY7Dg

Rewatched the linked video I included on the original post. You can actually see her jump over the arena wall before she lands on the wrong side of the arena gate and bugs out (no pun intended).