Update: Got some info from Adobe support on this topic:This happens when there are too many unsuccessful attempts to login, all originating from the same IP address. If left alone, the reCAPTCHA goes away in about two weeks' time.

BenjaminGaines​ did you ever find anything out here?  We recently started seeing this too when login to any of the aforementioned Adobe tools.  It adds maybe like 15 seconds to the login process at most, but our users are very unhappy about it.  Here is what my URL looks like when I see the captcha:...