When I equip a custom skywars death crate (e.g., the Sunset Chest), I notice that all other players appear to have the same death crate as mine, even if they are under level 65. I am currently level 66, so I have access to this death crate, but others should not. I also tested this with a different death crate, and the same issue occurred—everyone else still appeared to have the crate I equipped.
This seems to be a visual bug causing my equipped death crate to display on all other players. Please investigate this issue.