Dying while holding a Totem

I am senior staff of server AzombiePigmanBrokeMyDoor and yesterday we had 3 separate conditions where a player was holding a totem of undying in the offhand [shield slot] and died without the totem popping/ activating. One was to a wither skull projectile, one was to a fire tick from a netherite sword, and one was from an event item [banner with sharpness].

I did testing trying to replicate the effects and was unable to replicate. Any idea if this is a paper specific issue?

Version?

1.16.5 sorry

Not sure if thread necro, but we never figured it out, anyone have an idea?