jamie

Fixed, but for future reference if the bug crops up again, it affected a zombie nautilus as well. Accidentally killed a coral zombie nautilus doing this.

Is the “Only Allow Trusted Skins” option under general in the settings enabled? If enabled, you can’t see custom (uploaded) skins. If it’s on, try turning it off and checking again with your friend.

Added report using official launcher.

Update: The crash seems to trigger on clicking an item, not just shift-clicking it. Attempting to move a shulker to my inventory crashed the game. I had just disabled all datapacks except [minecart-improvements] as well, so disregard those in the crash report.

The images sent in the wrong order so the first and third image is the 4th point and the second is the 3rd where the pause screen is blurry

After sleeping on it I realized that VanillaTweaks' “More Mob Heads” datapack changes mob drops. After disabling that through commands, the issue was resolved.

What threw me off was that (1) the world this issue came up in did not have any mods or loaders present for the prerelease 2 version and (2) I didn’t think that the datapack rewrote mob drops, only added the chance for a head drop.

this same thing happened to me i even did the different codes thing