On realoading worlds, from time to time armour stands will disapear. One time this has happened to only some armour stands in the world and at another has appeared to remove all armour stands present. This is difficult to reproduce due to the nature of the issue, but may be related to chunk loading when the world is first opened up. All armour stands were placed on slabs and stair block, which could be causing some issue. Armour stands were all equiped with either dyed leather armour or gold armour.