When I export a video for a single lap, I keep a few seconds of video after I cross the start/finish line.
I noticed that if that single lap is the last full lap of a session (as in "I go to the pits afterwards, and drive around the paddock"), the map in the video overlay changes to whatever zigzag I drive in the paddock.
Here's an example:
For the "Timing" section of the video overlay, I noticed there's a delay when the data for the previous lap is frozen for a few seconds after crossing the start/finish line. Perhaps we can simply do the same thing for the map?