Several flight now where the a350 does not engage nav to follow flight plan after take off. I end up having to either do a direct to to the next way point or engage heading mode. Am I missing something?

Edited December 29, 2025Dec 29 by BoeingSpeedbird
Should be a350 in title

Chap GPT says this is expected behaviour at certain airports where there might be a discontinuity in the flight plan or a manual leg or ACT vectoring after take off. I followed the Chat GPT steps to resolve (eg, Edinburgh airport), but it doesn’t work - plane still does not follow flight plan in the FMS. 

Nav following will only work if start cold and dark at gate, at least on Xbox. Seems to be a problem with flight plan fully loading or initiating if spawn onto runway with Simbrief upload. 

Edited April 4Apr 4 by BoeingSpeedbird