This is my experience on OSM wiki http://wiki.openstreetmap.org/:
Special:Userlogin ... Forgot password; requested a password reset
Special:Userlogin ... Got a new temporary password, logging in with it
Special:Userlogin ... "You logged in with a temporary e-mailed code. To finish logging in, you must set a new password here:"
Special:ResetPass ... The problem: the page looked like:
Log in / create account
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Your password has been changed successfully! Now logging you in...
Login error: <in a red box>
Incorrect password entered. Please try again.
Then a user login form was shown below. I input my password and logged in successfully.
Special:Userlogin ... You are now logged in to OpenStreetMap as "Liangent".
Version: 1.13.x
Severity: enhancement
URL: http://wiki.openstreetmap.org/wiki/Special:ResetPass