The system I'm using is a Ubuntu Linux system with a FlightGear Version 2020.3.6 on it and a c172p. Starting the taxi tutorial as a newbe I faced a strange behaviour. After shifting the airplane's position from BIKF to another airport and starting the engine, the seat is set to the lowest possible position (by the tutorial). The result was, that I could not see the environment (except through the side window). So my first taxiing experiences I got using an outside view. It took some time to me to find out, that the seat can be lifted with Alt <Pg Up>.
It's no severe problem at all but a better seat position would be quite helpful for beginners.