Thank you, @markd and @simon.tamman! I picked an option and it’s ok now.
You are both right about all you said- I didn’t even notice that “Refresh Token Behavior” option in the form. I just went there to make a change in some of the fields at the top. After seeing the error I somehow levelled myself that it’s about some refresh token on the user I’m currently logged in, but not some field in the form.
This can still be considered a UI bug as @markd mentioned. Telling the user By default, this is set to the non-rotating behavior turns out to be misleading.