I have the same problem and in addition an easy to solve bug is not solved since many years After saving a flight and reloading, the plane has a wrong flight state. Saving at parking position, engines are shut down, after reloading, the position is at the runway with running engines I featured out that it is a wrong saved flight state into the .flt file, and it is really a shame, that such essential bugs not solved since starting 2020.
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