We are using the Universal Login password reset form which seems to be working but when the reset password button is hit, the success message does not appear. The password seems to be resetting but nothing appears to inform the user that it has been set successfully. Any guesses as to why this would be happening?
Are you using the New or the Classic ULP (Universal Login Page)? (as per Dashboard > Universal Login setting)
Can you post an anonymized screenshot of what the widget looks like after triggering the password reset flow.