Let person detection examine entire video clip

Many motion events involving people are triggered before the person is visible e.g. by a door opening or lights coming on. These seem to be tagged as simple motion events, not person events, even when someone is clearly visible in the next few seconds of video.
My suggestion is that, regardless of what triggered the event, it should be tagged as a person event if a person is detected at any point in the 12-second recording.

This is actually how person detection already works. Please see this article on the support site.