My horses are continually despawning in my sercure base - walls 4 blocks high with doors to exit.

It first happened with two saddled tamed horses and the other two, non tamed ones were fine. After some research I found "the bug is fixed but it definitely won't happen again if you name them".

Then my diamond armour, saddled horse is not there on relogin. I know it didn't die because items I dropped when I last saw it are still on the ground so if it had died it would have dropped it's loot.

Since two more, one saddled and named and one tamed no saddle have disappeared after I go to bed in the game.

It's extremely annoying especially considering the scarcity of name tags and saddles. I only play survival so can't spawn one.

I have searched this issue but they're either different versions or sercumstances.