Players with a duplicate UUID of an already existing mob in the world can cause the player to get repeatedly kicked

Steps to Reproduce (do this on a new world):
1) Run "/data get entity @s UUID"
2) Place a repeating command block set to always active with the command:
/summon wither ~ ~ ~ {UUID:[I;W,X,Y,Z]}
3) Replace the letters WXYZ with the numbers that you get from your own UUID
4) Save and quit and then try to rejoin
5) You get kicked with: "Invalid player data", and cannot rejoin the world

Expected result:
The player joins the world

Observed result:
The player cannot join the world