My Leon has been a really good car for me, I bought it used, with 15000km run on it, and now at 35000km this is the first big issue I have had.
As for infotainment issues, I have sort of had issues with mine, the main infotainment unit works fine, but the carplay link to my iPhone do get messed up from time to time, especially if it is running wirelessly.
I think it had more to do with radio interference and how the Carplay protocol is implemented rather than the infotainment in the car.
I have however found an external factor that has messed with my car's built in navigation system, Russia spoofing GPS signals, I drove around the northern suburbs of Stockholm, and my car's map thought I was driving in the southern suburbs and costantly moved my marker all over the place, my phone was fine though at the same time...