Would it be possible to make the Location: Parking choice scrollable? Clicking the up/down arrows now present as many choices as the box is able to show on the screen (in Windows, anyway). It is not possible to select from all parking spaces if the airport has many defined.
The exact number of spaces shown depends on the screen space available below the selection box. Moving the bottom edge of the FlightGear launcher window up can provide more screen space for the Parking selection box but may not show all parking spaces defined for the airport.
If this is NOT the place to make such a request, please let me know.