I was exploring the Trial Chambers… Or Trail Chambers? Anyways, I was exploring the Trial Chambers, and I noticed something about the Trial Spawners. There was something spinning on the trial spawner. I looked inside, it was a player-sized mob that had their head stick out a bit while pole dancing without a pole inside the cage.

This started happening with the Skeleton Trial Spawners, and then recently with the Zombie Trail Spawners. I haven’t tested Endermen yet, but I thought to report this since this is an issue.

I can suggest you just lower the offsets of mobs pole dancing in the trial spawner.