So I was checking my friends list and noticed that the roles of some Codeforces users have been either downgraded or upgraded, even though their rating is the same as it was before.
Some who used to be Specialists are now Candidate Masters, some Experts got downgraded to Pupils, and so on.
I talked to other users, and they told me they experience the same bug on the site.
I suggest this bug to be fixed, because it brings a lot of confusion to the Codeforces users, whose roles have been changed randomly.