the issue here is the logic in the sim and has nothing todo with a scenery or simlink. The sim set the approach course automatically to the runway-heading and that´s what happened here. When you extend the runway you will see, that your position “correct” aligned the runway.
Of course, that´s completely wrong - at least for offset-approaches as here in Innsbruck because this valley is surrounded with high mountains and to fly this approach offset makes sense. You´re course ends normally in one of the hills near Innsbruck.
Sorry, but this is a sim limitation and has nothing todo with your configuration and/or any tool.