I had the exact same problem with it starting in Nav and jumping to AM. Also couldn't remote lock/unlock or start with Ford Pass. I just updated to the latest software build and it seems to have fixed it ( for now anyway )
Every 5th or 6th time I start my 2021 Ranger the Sirius XM doesnt work at all. SYNC 3 Ver 3.4 Build 21020. Nothing happens when I scan for software updates. Anyone else have this problem?