Re: Unrevivable Insta-death Death
This problem seems very exploitable in multiplayer and private games for easy revival experience (if what you said about players being able to revive is true)...
It is strange as an "insta-kill zone" (or an out of bounds zone) would vanquish the player though the game is intended to make the player "unrevive-able" in this state to prevent this bug from occurring. The best way to avoid this is to stay close to the intended areas so minimal bugs would happen (as I never encountered this bug once).
From what you said, you somehow bypassed the "unrevive-able" trigger in "insta-kill zones" allowing for self-revives and player revives to be used though this is useless as you would be revived in the same "insta-kill zone" that got you in this limbo in the first place. To clarify, does the automatic revival re-vanquishes them or leaves them "unrevive-able" once vanquished by a enemy? If it is the second option, it is likely the game thinking you would have to be vanquished in an "insta-kill zone" hence postponing it until it receives the information of "you have been vanquished".
Sorry I may not be able to give you a wanted answer but I hope this might clear things up for you. If you find this useful, please press the XP and Accept Solution button if needed. 🙂
I hope this does not harm your experience again. Have a nice day!
-VoltScience: Exposition Mage