Instance reset if killed by map boss

At first I tought it was a bug, but after some reserches this shi is actually a feature?!
I mean, I can close an eye when it's a random map, but if I bleed out while Doryani is coming out of the portal and the whole map whipes out, and I have to search another nexus that only God knows where is located, then this "feature" is the worst of all time.
Just want to congratulate with POE1 devs using POE2 as a beta to not make the same mistakes.