Wireless connectivity may be frustrating (though I've never had connectivity issues plugged in to the USB port), but this is a really bizarre framing.
Just pull over.
Other implementations (looking at you Hyundai) crash requiring you to pull over, disconnect the phone, reboot the infotainment and then re-enter your navigation destination.
The best implementation is no carplay: instead use an AUX port and mount the phone on the dash.
Second best is Tesla's custom navigation. They do something other car companies should: use one of the million speakers in the car to focus on navigation directions while allowing audio content to continue playing on all the other speakers. Such a simple idea but so good.
Next time, try holding Volume down+forward buttons.
That being said, Ford makes great vehicles, but terrible software. My car has so many stupid bugs (all just annoyances).
My previous-gen Kia Sedona does this as well (at least when using the built-in maps).