unfortunately this is a sim limitation with their flightplan engine. The Airbus (also the FBW Airbus) uses the same sim-engine what you see also in the worldmap. This sim-engine has some limitation with linking STARs and approaches because they truncate the flightplan on some point and therefore the flightplan looks not so as on the charts.
When you try the Working-Title CJ4 mod (stable release), you will see that this procedure is absolutely correct, the legs are in the correct sequence and the leg paths are interpreted correctly.
Here the same with this mod (using exactly the same data):
ILS 32-Z FUBKI STAR:
ILS 32-Z SARUK STAR
FBW A320 is working to use the same flightplan engine as the WT CJ4 in the future, so I guess we can expect a nearly equal result in one of the next FBW A320 updates but at the moment, they are using the same engine as the sim and as I wrote (and you see), with limitations.
Hope that helps,