Trouble in c:geo with GMS location service

[RalfJung]

When using c:geo together with this GMS implementation, the app doesn't work properly: Once the app is running, it fails to update its information about my current location. The device doesn't even seem to try to update the location: The location icon does not appear in the status bar. I reported this against c:geo in cgeo/cgeo#5162, and the advice I was given there was to disable the use of Play Services. That increases power usage (or so the settings say), but it made it work.

I would have expected GmsCore emulate the behavior of Google's implementation faithfully enough for c:geo to work with Play Services enabled.

The relevant code in c:geo seems to be https://github.com/cgeo/cgeo/blob/master/main/src/cgeo/geocaching/playservices/LocationProvider.java.