Patrick Spencer

I think the reporter may have mobs simply left over from the night,seeing as one of his other "bugs" was not being able to leash hostile mobs.

This isn't a bug, it's Cat Fancy Home Delivery Service! Duh! XD

This actually happens to me a lot in multiplayer, the same thing happens with the respawn button. I think it might have something to do with chunks unloading being visible and having to do it so fast.

It's something about the multiplayer chat being shown, try switching it around a few times.