I'm not sure if this happens in other server but I only found this bug from playing singleplayer. The device I'm using is Poco X3 Pro / Android 12.
@OcelotOnesie No, not really. I first noticed this unusual bug when I was trading with a villager. I jumped in a small 2 blocks tall room and there I found out that there is no collision when jumping.
So I tested this on 1.19.50 multiple times and it seems that they are not disappearing anymore. I think this bug now is fixed.