The account-lockout bug, first reported by Android Police, appears to trigger from the action of blocking a fake profile, be it one impersonating a friend or relative.
Dozens of people have faced the issue, and it is locking out not just the reporter account but also the one being reported.
Notably, the non-responsive verification page appears to be the work of a non-functioning API.
What did Facebook say on the matter?
After several complaints, Facebook acknowledged the matter and told AP that it has pulled buggy API as it is investigating the developers responsible for it.
"We worked quickly to fix an issue where we unnecessarily asked some people to verify their accounts after they reported account impersonation for someone else", the company said. "We've removed this request and restored access to the affected accounts."
What to do if account is not restored?
While Facebook says it has started restoring access to the accounts that may have been locked out, the action might take a while to come into effect.
Now, if that's the case with your locked out account, we would recommend using this form for verifying your identity.
This will expedite the process and help you gain access to your account.