Satellites info is not emitted by request

satellitesInUseUpdated(), satellitesInViewUpdated() signals of QGeoSatelliteInfoSource class are not emitted after calling requestUpdate().

1) Get instance of QGeoSatelliteInfoSource using QGeoSatelliteInfoSource::createDefaultSource().
2) Connect QSignalSpy to satellitesInUseUpdated() and satellitesInViewUpdated() signals.
3) Call requestUpdate(7000)
4) Sleep for 10 seconds.
5) Check signal spy count

Expected result: signal spy count should be more than 0
Actual result: signal spy count is 0

NOTE: requestTimeout() signal is not emitted too.