Yes, this is a known bug with CO systems. I had a SMF-SFO flight that was paged out through the app as cancelled, although it was really the ACV-SMF portion that was cancelled, and my flight was on time.

I got to SMF and asked if everything was in tact, since I was on the cancelled flight that was reinstated, and they were surprised to hear that. I showed them my phone which showed the cancellation, and they were in shock, and none of them could find any record of the cancellation.