Location Always permission

I found some odd behaviour of location permission.
I requesting When in use permission and after that Always location permission.

{"msg":"CLLocationManager", "event":"activity", "cmd":"requestWhenInUseAuthorization", "self":"0x2819d88f0"}

{"msg":"CLLocationManager", "event":"activity", "cmd":"requestAlwaysAuthorization", "self":"0x2819d88f0", "SEL":"requestAlwaysAuthorization"}

{"msg":"Non-#provisional WIU to Always #AuthPrompt prompt response", "ClientKey":"com.xx.xx", "GrantedStatus":"AuthorizedAlways", "BypassingSomeoneElseOnDeck":0}

{"msg":"state transition", "event":"state_transition", "state":"LocationManager", "id":"0x2819d88f0", "property":"allowsBackgroundLocationUpdates", "old":0, "new":1}

allowsBackgroundLocationUpdates = true
pausesLocationUpdatesAutomatically = false
also background modes have enabled location updates.

After i go on in background, location updates are stopped.

If i go in phone settings and change permission from always to when in use and back to always all works fine.

Im not sure what is problem here, is there any solution to this?