mapViewDidFinishLoadingMap and mapViewDidFinishRenderingMap MLNMapViewDelegate methods are not called in 6.10.0

[r3econ]

MapLibre iOS Version

6.10.0

iOS Version

18.X.X

Device

iPhone 14, iPhone Simulators

What happened?

Some of the MLNMapViewDelegate methods are not being called.

Steps to reproduce

Scenario

• iOS Swift UI app with 2 tabs. Each app has a separate MLNMapView view, separate delegates.
• Style is set at runtime, not in init.
• Delegates implement the following methods:

func mapViewWillStartLoadingMap(_ mapView: MLNMapView) {
  print("mapViewWillStartLoadingMap")
}

func mapView(_ mapView: MLNMapView, didFinishLoading style: MLNStyle) {
  print("didFinishLoadingStyle")
}

func mapViewDidFinishLoadingMap(_ mapView: MLNMapView) {
  print("mapViewDidFinishLoadingMap")
}

func mapViewDidFinishRenderingMap(_ mapView: MLNMapView, fullyRendered: Bool) {
  print("mapViewDidFinishRenderingMap")
}

Test results

App starts, first tab is shown. All 4 delegate methods are called.

✅ func mapViewWillStartLoadingMap(_ mapView: MLNMapView)
✅ func mapView(_ mapView: MLNMapView, didFinishLoading style: MLNStyle)
✅ func mapViewDidFinishLoadingMap(_ mapView: MLNMapView)
✅ func mapViewDidFinishRenderingMap(_ mapView: MLNMapView, fullyRendered: Bool)

User switches to the second tab. Only 2 delegate methods are called.

✅ func mapViewWillStartLoadingMap(_ mapView: MLNMapView)
✅ func mapView(_ mapView: MLNMapView, didFinishLoading style: MLNStyle)
🔴 func mapViewDidFinishLoadingMap(_ mapView: MLNMapView)
🔴 func mapViewDidFinishRenderingMap(_ mapView: MLNMapView, fullyRendered: Bool)

The expected behaviour is that all 4 methods would be called again. This is a regression of #2993.

Relevant log output

Additional context

Downgrading to 6.6.0 fixes the issue. All 4 methods are called.