Fake GPS app break localization

Hi,

I just install LineageOS 14 (Android 7) with MicroG on a Moto G 2013 and all works fine except localization.
Added MozillaNlpBackend and NominatimNlpBackend.
If I run this app: https://play.google.com/store/apps/details?id=com.lexa.fakegps&hl=en_US
Then auto test failed and give _`"UnifiedNlp do not have Location to test Geocoder"`_ error.
Same scrren as this:
https://github.com/microg/android_packages_apps_GmsCore/issues/366#issuecomment-299542410
Tested with al 3 possible location mode and every time the same error.
So is it an app fail or a microG fail ?

Thanks

Start by reproducing the failure on LineageOS 14 with MicroG, MozillaNlpBackend, NominatimNlpBackend, and the linked Fake GPS app. Compare the three location modes and the UnifiedNlp geocoder behavior to determine whether the failure belongs to the app or UnifiedNlp; done means the responsible component and reproduction conditions are documented.

Written by the indexing model from the issue text.