I was about to create a world checking out the new beta features for update 1.21 in Snapshot 23w43b and when creating a world I noticed an alpha - early beta world that somehow got all the way up into my snapshot file select screen. Could any other Java players tell me if you've experienced something similar? I'm on MacOS Ventura and have never played a world from an older launcher.

Steps to Recreate:

1. Make a world on a pre-release version of the game on the current launcher.
2. Get out of the world and disconnect your Internet connection. (Mine just wasn't working at the time)
3. Play on Snapshot 23w43b and check your worlds.

You should get a similar result to mine.