Logon failure: unknown user name or bad password (even though it still works)

[dgsmith]

Got a rather annoying problem with the latest HAP rather than a stopper - whenever a user logs in they get this message. The logon goes through fine and there appears to be no other issues, and indeed it prevents logon altogether when an actual bad combination is entered (which obviously is expected).

Any reason for this, particularly as it does actually log users on fine?

[nickbro]

Hmm, that's odd, it shouldn't

[dgsmith]

Well yes I know that, hence my making a post to see if it can be resolved?

Is there even a way to remove this message altogether seeing as the one you get when entering an obviously incorrect combination on the login page is a different one?

[nickbro]

That's the thing, I can't replicate this on any of my test/production installs