Trial of Sekhemas - Zarokh, the Temporal BUG dead but trial complete?!?!?!?

Come on GGG... I just killed him, and now I'm lying on the floor dead and still says TRIAL COMPLETE

Like, come on... how and why is this possible

edit 3: After the third respawn at the checkpoint, I've managed to return to the beginning.

Update2:

How should I exit this? There is no button to exit, and relogs don't help either.