When answering CAPTCHA in the Log In page for Mojang Bug Tracker, the message returned is: Sorry, your userid is required to answer a CAPTCHA question correctly, regardless of being correct on the prior answer.

Summary: Answering a CAPTCHA question will always return this message regardless of being correct: {{Sorry, your userid is required to answer a CAPTCHA question correctly.}}I was forced to reset my password in order to fix the problem.

To Reproduce:
1. Log out.
2. Log in with an incorrect username or password.
3. Repeat #2 until a CAPTCHA pops up.
4. Fill in correct username and password.
5. Fill the CAPTCHA.
6. The aforementioned message is returned.

To Fix this issue:
Remove the CAPTCHA, and instead, replace it with an extra field, hidden using CSS. Bots will fill this out, but humans will never fill this out. If the line is filled, you know it is a bot. The bots can be automatically removed with some code, or be sent to a spam list.