Floodlight camera never detects a person getting out of a car

Hi there, we recently had a Ring Floodlight Cam Pro installed above our garage door so that we could get notified if someone pulls up in our driveway, e.g. a delivery person. The person detection promised to be exactly what we needed. So we've got smart alerts enabled and configured to send us a notification if a person is detected, and not for other motion as there would be way too much noise (e.g. by our cat). If I walk through the field of vision of the camera, it reliably detects me as a person and I get a notification on my phone. However, the much more likely scenario is that someone pulls up in a car, gets out and walks up to our front door. Unfortunately, I never get a notification about that, because it seems the car pulling up gets registered as "Other motion" and when the person gets out of the car that does not trigger another event with person detection. So really, the camera is absolutely useless for the purpose we bought it for. Since it's been professionally installed with silicone I doubt that I can take it back to the shop and get a refund. Super disappointing. I'm actually wondering if this behaviour is by design or potentially a software bug. Do others see that same behaviour and has it always been like this?