If the Spider Mother boss climbs the pillars in her boss room, the animation where she climbs to the ceiling to spawn spider minions often results in her overshooting the roof and clipping far into the ceiling, only to suffocate and die.

This bug is a common issue with players in a modpack server I am involved with, so it seems to occur relatively often with players unfamiliar with The Aurorian.

I confirmed that I am running the current version of the mod and tested on a profile with only The Aurorian installed, so the bug is not the result of mod interactions.