OK I just had some experience with the new v1.9 firmware.
- Parking mode overnight: everything seems OK, several 45 second clips (pitch dark, no clear indication of why the clips were filmed. Possibly the blinking alarm LED on the dashboard, I need to cover that or whatever).
- Going for a 10 minute drive: everything OK, entire trip was filmed.
- Parking mode while parked: everything seems OK, several 45 second clips of actual events.
- But then there was a problem while driving back home; another roughly 10 minute trip: this wasn't filmed at all! I noticed upon arrival that the red [Rec] LED was blinking fast.