Previously, I reported a bug with the description, "In a world which I had originally created in version 1.8 there were armor stands which had arms added to them, so that way they both wore armor and held items.However, when opening that world in 1.16.2 (and this problem still persists in 1.16.3) the stands' arms became invisible and were holding their leggings and boots instead of wearing them, causing both the chestplates/helmets to disappear and for the previously handheld items to vanish." However, it was labeled as using mods and I was told to create a new ticket if I could reproduce it in vanilla, which I can. The arms are no longer invisible, however