That’s a nice find, thank you for sharing it with us.
About point 1 yes, all APIMs do have some kind of GPS capability regardless if they are NAV or no-NAV…
About point 2 that’s also correct and was documented in the build’s thread → Sync 3.4.22110 & 2021 Maps - Feedback & Issues
And yes, they never fixed it…
Anyways, I’ve marked this thread as solved since downgrading to a previous build worked. Should you face any issues with 3.4.22048, consider going back to 3.4.21256 which is a bit older but proved to be really stable.