I was playing on my skyblock then i got done building a structure for a my horse so i spawned him in and it turn out a baby horse but i went to the store to buy another horse when i came back i didnt have anything it was a new island and all i said was /home and for warp all i did was /warp grass so i do not wanna restart that took us atleast a week with my other 3 friends that help please help i have a really big island with 3 floors and my horses

 

Are you the owner of the coop? If not then most likely the leader has done /newisland replace

 

Yes im the leader

 

Probably a glitch of some sort