I’m playing minecraft in a singleplayer workd and I’ve noticed that at one point my tamed horse with nametag and armor dissapeared. I logged in and out, checked the area but found nothing. He was also in an enclosed area with fences. I didnt think much of it at first. Now my alpaca and donkey have also dissapeared. Same story, nametag, tamed and with sadle/carpet. My donkey lives underground and has no way of escaping, plus I didnt ride him or anything, just gone. This is where I believe it was a bug. 

I believe this may happen because whenever minecraft feels like it isnt connected well enough to the internet, the game kicks me out of it. Very frustrating since my wifi has never caused any troubles with other games and I play the game close to the router.