Cats Getting Stuck Underneath Ground

So, I was in my own survival world, in a village, and I heard a cat meow and I got my fish to tame it. But, for not apparent reason, I couldn’t find it anywhere. I searched underground, round the corners, in the houses, everywhere! I opened up to this situation to the Minecraft subreddit. One person (in which I prefer not to say in case of privacy reasons) suggested that the cats may have become stuck a couple blocks beneath the surface. So I dug the from the surface, and it came to my attention that they DID get stuck ONE block under surface level. There were four cats that I found from the ground. I thought this was a glitch UNTIL it happened again! It’s been three times this has happened (including now) and I’m now starting to think this is a bug. I will at least hope that this gets fixed soon. Thanks!