Possible duplicate of
i posted a video on my duplicate ticket MCPE-99648
I have a similar issue (bedrock, switch, 1.16.2) I have a zombie spawner and it gave me a little villager outpost. i have used it to cure upwards of 10 villagers. but every once in a while they just disappear. there is no signs that they died, they aren't zombie. they are just outright gone.
I have had this occur 4 times now on my outpost. Each time it affects villagers in the same corner. I wonder if it related to how chunks are rendered.
I have also had similar issues with (moving) minecarts disappearing over chunk borders. so i wonder if you are just out of render distance and a villager moves outside of it's chunk if it will cause weird behavior.
I mean... maybe.
But realistically they should be API calls to a microsoft server that are returning binary large objects to load in the pictures, or even easier linking to pictures from a folder. Images shouldn't be the thing that take down a web store lol.