So I was using my elytra and firework rockets to fly around to find a new place for my base, I flew and then I landed at an abandoned village. I thought it would be neat to loot that village for some reason so I went into one house to look for a chest and  then I had to fight a zombie villager. After when I killed the zombie, I reorganized my items. After I organized my inventory, I started seeing FIREWORK particles coming from under me. Since when 1.16.100 came out, my friends inventory was wiped clean when they went on their survival worlds. The firework particles only lasted for a few minutes until it stopped.