In my survival world, I had multiple Armor stands, 2 for each Armor type displayed on a pathway to my nether portal for decoration.

I came onto my world today to play to find that one of my armour stands has had all the armour completely disappear without any idea of where it has gone or how it went missing. I can say with almost certaincy it is a bug as nobody other than me has ever been in the world and permissions for other players are on visitor anyway, meaning they can not do anything should they get in the world. Only one singular armour stand was effected (out of 10) with everything else going untouched. I have since replaced the missing armour and put everything there into chests until a fix has been made. Stay safe 

PS, the armour was netherite armour