»Functional key crates found in survival world

What type of bug: Fully functional key crates (vote, uncommon, etc) in the world of wilderness.
Server: Survival
Arena (If possible): N/A
Date and time: Today (Jan 19), about an hour before posting this.
Visual information(If possible):

Likely carried over from the previous reset, as the coords match up with those from the spawn of said reset. I've discovered this by placing enderchests within those floating fire particles, purely out of curiosity.

Here is the rare crate, having launched me several blocks into the air upon right-clicking.


And below is a screenshot from last reset, during that easter event, to prove my point about the coords.