Why are the bodies of my dead dwellers disappearing in Fallout Shelter?

I was wondering why some of my dead dwellers have disappeared?

It wasn't all of them, and it wasn't necessarily the ones that had been dead the longest.


The only way I know how dwellers will disappear is a death time over 24 hours.

It may be that you haven't seen it, or haven't mentioned with dweller was dead for the longest time. But normally they just stay for 24 hours in your vault. After this time is used up and you haven't reanimated them, they disappear (with all their stuff).