- Annoyance
It's just a small annoyance and it needs a well defined order to see it:
1.) Start a parity check. Let it run for a minute or so. Cancel the parity check. Clear the current notification. Wait a day or so.
2.) Start a parity check and let it finish.
--> The GUI notification shows a red icon even after a successful second run. The GUI notification will take the previously canceled parity check and it's result into account. Looking into the History you will see both lines in the correct order:
--> The text shows the correct result:
--> At that point the text and the notification don't match.
As a said, just a small annoyance. But I always get a heart attack seeing that red icon 
Thanks.