My horses and boat disappear after dismounting

I am on Xbox but there was no Console option when I made this issue. There has been several occurrences where, when I dismount my horse or boat, they completely disappear. They do not become invisible because I cannot hear or touch them. They are just gone forever. All chunks have been loaded too. Total in the past, this has happened to three of my horses, a boat, and even an anvil after I was finished using it (it didn't break because it was brand new). I have a video but I can't attach it because the file is too big.