The teleport mechanic is still rubber banding at inconsistent times throughout the fight. I recorded a T3 fight to demonstrate the issue. You can see it happen
around 1:20. Sometimes it happens more often sometimes it happens less. I’m not sure what triggers it.
Progression
You can progress to the next tier while dead if your minions kill julra. I don’t think I should be getting kill credit for boss tiers if I kill them while dead.
I am getting the same issue with teleport, although in my case she instantly drops a Tear as soon as Implosion happens, someone have mentioned that it might be related to casting a skill while teleporting which causes your char to return to previous timeline at the end of cast.
If someone needs logs or another recording I have those.