[Bug]: Maps not displaying in CarPlay Instrument Cluster with v3.17.0

[denhams]

Mapbox Navigation SDK version

v3.17.0

Steps to reproduce

Upgrade Mapbox Navigation iOS SDK from v3.16.1 to v3.17.0. Test the following code snippets.

Create a very simple SwiftUI map view:

    struct Example: View {
        @State var viewport: Viewport = .followPuck(zoom: 13, bearing: .constant(0))

        var body: some View {
            MapReader { _ in
                Map(viewport: $viewport) {
                    Puck2D(bearing: .heading)
                        .showsAccuracyRing(true)
                }
                .mapStyle(.outdoors)
                .ignoresSafeArea()
            }
        }
    }

In the CarPlay instrument cluster delegate, display the map view:

	func templateApplicationInstrumentClusterScene(_ templateApplicationInstrumentClusterScene: CPTemplateApplicationInstrumentClusterScene, didConnect instrumentClusterController: CPInstrumentClusterController) {
	  let example = Example()
	  let contentViewController = UIHostingController(rootView: example)
	  contentViewController.sizingOptions = .intrinsicContentSize
	  contentViewController.safeAreaRegions = []
	  instrumentClusterViewController = contentViewController
	  instrumentClusterController.delegate = self
	}

Expected behavior

With versions up to and including v3.16.1, the app displays maps on the iOS device (iPhone 15 with iOS 26.1), the main CarPlay device and on the CarPlay Instrument Cluster. This functionality has been working without issue for a couple of years.

Expected behavior is for this to work with v3.17.0. That is the maps are displayed on all three windows.

Actual behavior

With version v3.17.0, the app can display maps on the iOS device (iPhone 15 with iOS 26.1) and the main CarPlay device. On the CarPlay Instrument Cluster, only the ornaments are displayed (e.g., scale, logo). No actual map is displayed, only a white background.

Notes:

1. Changing the map style does not change this.
2. No errors are logged.
3. Tested on the CarPlay Simulator and a real vehicle, both with Instrument Cluster.
4. Reverting to v3.16.1 (no other changes) fixes the problems.

Is this a one-time issue or a repeatable issue?

repeatable