100% tied to the passive:
Enemies sometimes despawn on contact (?). Tested with Fargo's Super Dummies, see the randomly missing dummies after attacking (images attached).
This behavior is rare and took many attempts. I have noted it happening to various random enemies as well (lihzahrds, skeletons, tortoises, etc.), so it seems to not care for type of enemy.
Other occurrences I believe are tied to the passive:
3 times out of 3 attempts, WoF despawned at low HP in his domain, using Bee Hive yoyo.
1 time out of 2 attempts, (potentially) crashed the game during the Plantera fight (image attached).

