Calamity Skeletron fight bug

[Derpy Atack]

I'm currently playing Calamity Reveangance with some quality of life mods with a friend and for some reason, when Skeletron is like 15%hp he despawns. We've tried some things but it doesn't has anything to do with the height of the arena, or the sunrise or something like that, we killed him faster than he could despawn (cheating with zenith) so it's no longer a problem, but still i wonder why this happens.

[Yeti.^^]

Seems to be a Revengeance thing with the rework it provides to its ai.It just goes and flies off uncontrollably for.. some reason.
Can just turn off Rev for the fight and turn it back on again afterwards if one's not partial to cheating (not blaming you for doing it, mind).

[darbywillkill]

ive been having this problem tho i can see why, it seems stupid that the bug isnt fixed yet

[Krolix]

Happening to me too and I tbh thought of cheating cuz we have no problem killing him without, it's just that he keeps despawning and we can't do anything about it