Hi Jean-Luc,
I´m pretty, pretty, pretty sure, that the in-game flightmanagement has skipped GIINA in this case. According your screenshot, you have passed ELGAR - the next waypoint is HARPS which looks also be passed but after that it seems that the A320 doesn´t fly to GIINA and follow the track after HARPS.
You wrote, you have used a SimBrief flightplan, please can you upload the fpn-file here, that we can look deeper into this. But again, I don´t see any issue in the source data, nor in the MSFS data. The track looks not very complete, and therefore it´s hard to say what happened. But possible, we see something in the SimBrief file what you have used …
Thank you very much …
Richard