I confirmed the problem is NOT CONSISTENT. Today I mistyped password and immediately got "Password Incorrect", then about as fast as I could read the message, the (re) Enter Password window redrew. That WAS when unlocking after a "Lock Screen" request.
(I also frequently "Suspend" this system and haven't yet had a problem unlocking from that, so wasn't immediately sure I'd ever seen a timely recovery after bad password on locked screen.)
I confirmed the problem is NOT CONSISTENT. Today I mistyped password and immediately got "Password Incorrect", then about as fast as I could read the message, the (re) Enter Password window redrew. That WAS when unlocking after a "Lock Screen" request.
(I also frequently "Suspend" this system and haven't yet had a problem unlocking from that, so wasn't immediately sure I'd ever seen a timely recovery after bad password on locked screen.)