Here's an odd thing. I'm using 2.3 (no, that isn't odd).
I'm using a registration/user tracker and the CAPTCHA for login won't work unless I also turn on the Anonymous editors must input anti-bot code option. However, this means users have to enter two CAPTCHA codes, one on the main registration screen and one on the user tracker form.
If I just use the login CAPTCHA, without the Anonymous editors option, then after the user has filled out and submitted the user tracker form they get a You are not logged in. Go to Login Page error.
I'm wondering if the feature_antibot supercedes the rnd_num_reg, and so rnd_num_reg is ignored giving the illusion that it's working when feature_antibot is turned on, even if it's not.
Anyone else have this problem? Is this a known bug or have I messed up my upgrade somewhere?