There are loads of weird little bugs with MMI and Carplay redundancy, but I've noticed that my FM Radio will sometimes simply turn off. It sounds initially like it lost reception, and indeed I assumed that for a few days, but then one morning I simply pressed the button again (button 1 on the row of touch sensitive presets north of the MMI controller) and it immediately came on again.

This seems to happen at random.

I also discovered that I have autofolding mirrors this morning by reading the manual, and that the original spec for this car includes wireless phone charging (I believe it was cut for US models).