If you name a spawn egg "Grumm" on a anvil, when you spawn the mob it will glitch out and go upside-down.
MC-20874
Naming a spawn egg "Grumm" will make the mob glitch out
Resolved
Duplicate
0
Duplicate of MC-19223, please use the search function to see if your bug has already been submitted. Currently over 58% of tickets are being closed as duplicate.