Maybe someone else has had this problem. I haven't seen anything like this. If you attempt to interact with an unloaded loot chest when you're in spectator mode and you switch to creative and back to spectator mode, your hand will disappear and particles will no longer be displayed on the screen.
The screenshot attached is after the bug has been re-created. Switching between spectator and creative while interacting with a loot chest that isn't loaded but gets loaded by going into creative mode is how I re-created it. Switching between spectator and creative rapidly while interacting with the chest is the best way to re-create this bug.