Not that but I've experienced three others. 1) randomly, the music will lower as it does when Siri is announcing the next turn, but it waits two or three seconds instead of doing it immediately. And it is not at the typical 2 mile or 10 mile times. 2) randomly, the app will revert the top part to whatever the first thing it told you to do on your route was. Everything else will still update except that. 3) randomly, the app will cancel navigation and drop you back to what you searched for. The last two are very annoying when on a long trip and driving in traffic on the highway.