Wrong map view orientation when device is moving in landscape mode

I am using custom mapbox turn-by-turn navigation in our bike app. Navigation should work in landscape mode and camera should follow user with heading. Everything works fine when I'm testing the navigation in office by simulating location changes, but the problem occurs when I put the device on bike and start to ride.
After few hundred meters map view changes orientation to portrait and, because device is in landscape/faceUp mode, user heading indicator shows wrong direction. I've tried with few approaches but result was the same. First implementation was with userTrackingMode set to followWithHeading. Second one was with userTrackingMode set to follow and I was changing map view direction to fit current CLLocationManager heading. The last one was with userTrackingMode set to follow and I was changing camera to point current CLLocationManager heading.

The last approach code example
MGLMapView initialization:
mapNavigationView.styleURL = mapStyle.url mapNavigationView.delegate = self mapNavigationView.showsUserLocation = true mapNavigationView.userTrackingMode = .follow mapNavigationView.compassView.isHidden = true mapNavigationView.attributionButton.isHidden = true mapNavigationView.logoView.isHidden = true mapNavigationView.direction = 0

output .heading .asDriverIgnoringErrors() .drive(onNext: { [unowned self] in guard self.isUserNavigating else { return } var heading: CLLocationDirection switch UIApplication.shared.statusBarOrientation { case .landscapeLeft: heading = $0 - 90 case .landscapeRight: heading = $0 + 90 default: heading = $0 } self.zoomToUser(withHeading: heading) }) .disposed(by: disposeBag)

func zoomToUser( fromDistance: CLLocationDistance = Constants.Map.distance, withPitch pitch: CGFloat = Constants.Map.pitch, withAltitude altitude: CLLocationDistance = Constants.Map.altitude, withHeading heading: CLLocationDirection = Constants.Map.heading ) { guard let center = mapNavigationView.userLocation?.coordinate else { return } let camera = MGLMapCamera(lookingAtCenter: center, acrossDistance: fromDistance, pitch: pitch, heading: heading) camera.altitude = altitude mapNavigationView.fly(to: camera, completionHandler: nil) }

I thought that device orientation changes was the cause of the problem, but it occurs when device is in landscape/faceUp mode all the time too.

Start with the MGLMapView initialization and the heading stream that calls zoomToUser, comparing behavior during simulated movement with physical movement while the device remains landscape/faceUp. Check how userTrackingMode, statusBarOrientation, CLLocationManager heading, and camera direction interact. Done means the map remains correctly oriented in landscape and the user heading indicator points in the direction of travel.