I noticed during this Beastmoon event that some of the traps and curses applied by AOEs just stay on for the entirety of the battle. I don't know if it's specific to certain beast forms but I'll detail it just in case.
The first time it happened, I was playing as a Balance Wolf and got hit by a Death Cyclops's ''Confounding Fiend'' (which put a -100 curse on me). Despite getting rid of it, the -100 damage effect kept being applied throughout the rest of the battle.
Second time it happened, it was also on a Balance Wolf hit by a Death Cyclops (same attack and all), but it was on my teammate, not me. They said that they had also seen something similar with the AOE traps that the Death Rat can cast, but I haven't witnessed it myself.
Hoping this gets fixed soon. Cost us the battle both times.