When I loaded up 1.20.1 Release Candidate 1 it was like it didn't fully download right or something, because it was saying "1.20/snapshot" on the menu screen instead of "1.20.1 Release Candidate 1/snapshot" and on the debug screen it just said 1.20.

It also didn't prompt me to make a backup despite being a snapshot.

It also had a grass block as an icon instead of a dirt block