With the new change of having Master starting at 2100, there is a bug with the rating changes in the contests tab of some people's profiles.

If you look here (sorry I don't know how to insert an image), my latest rating change, where "Became Master" should be, instead says "Became Candidate Master" again.

This is not a huge issue, but I thought I should point it out so it could be fixed by the Codeforces team.

Thanks and have a great day!