I have that from time to time after a software update from Apple. But basically you can set on the mobile phone or radio what should happen with such things. This is probably to be found under Navi Mix. I've already installed the radio 3 times and I'm always thrilled.

As I have sold my car including the radio, I am unfortunately unable to comment on this.

I've never used that function so unfortunately I can't help. I installed the radio in a vintage vehicle so it is hardly ever used.