Hi Richard,
I am not fully sure whether I understand you. So here is the basic question, why do I have full access to STARS and SIDs with the Fenix on that scenery, which btw is fully consistent with the navigraph charts and I asumme with the cycle as well. But how comes that I have only access to SIDs with another plane (FBW A380) and have not access to the STARS? That seems pretty unlogical. If this is a FBW issue then alright, I mean to be fair A380 is not fully supported in MSFS2024.
EDIT: I just checked with someone on Discord, in MSFS2020 there is no issues selecting STARS in the A380 at that Scenery (SiamFlight 1.0.11, February 2025 update), so I guess it is a MSFS2024 thing.
Best regards,
Felix