I’m in creative on my Playstation 4, and when swapping amour on the armour stand, the armour won’t leave my inventory. If I leave and then join back, then I can remove the armour.It doesn’t happen every time and I’ve tried it on different worlds. I’m pretty sure what causes it is when you try to replace armour on the armour stand with the same type of armour. It also happens with anything you put in the hand of the armour stand. However, you can drop and equip/drop the armour.