Fill Extrusion Layer flickering and rendering issue

While "fill-extrusion-ambient-occlusion-intensity" is greater than 0, setting fill extrusion layer with opacity less than 1 and height calculated by case expression makes all features flicker and have rendering artefacts.

Example with flickering:

await mapboxMap.style.addSource(GeoJsonSource(
        id: sourceName,
        data: geoJsonSource,
      ));

String someLayer = jsonEncode({
        "id": layerName,
        "type": "fill-extrusion",
        "source": sourceName,
        "paint": {
          "fill-extrusion-ambient-occlusion-intensity": 0.5,
          "fill-extrusion-ambient-occlusion-wall-radius": 20,
          "fill-extrusion-ambient-occlusion-ground-radius": 20,
          "fill-extrusion-ambient-occlusion-ground-attenuation": 0.5,
          "fill-extrusion-opacity": 0.9,
          "fill-extrusion-height": [
            "case",
            [
              "==",
              ["get", "someState"],
              true
            ],
            10,
            5
          ],
          "fill-extrusion-color": [
            "case",
            [
              "==",
              ["get", "someState"],
              true
            ],
            ["get", "color"], 
            "#FFFFFF"
          ],
        }
      });

      await mapboxMap.style
          .addPersistentStyleLayer(someLayer, layerPosition);

Example with no flickering:

await mapboxMap.style.addSource(GeoJsonSource(
        id: sourceName,
        data: geoJsonSource,
      ));

String someLayer = jsonEncode({
        "id": layerName,
        "type": "fill-extrusion",
        "source": sourceName,
        "paint": {
           "fill-extrusion-ambient-occlusion-intensity": 0.5,
          "fill-extrusion-ambient-occlusion-wall-radius": 20,
          "fill-extrusion-ambient-occlusion-ground-radius": 20,
          "fill-extrusion-ambient-occlusion-ground-attenuation": 0.5,
          "fill-extrusion-opacity": 0.9,
          "fill-extrusion-height": 10,
          "fill-extrusion-color": [
            "case",
            [
              "==",
              ["get", "someState"],
              true
            ],
            ["get", "color"], 
            "#FFFFFF"
          ],
        }
      });

      await mapboxMap.style
          .addPersistentStyleLayer(someLayer, layerPosition);

Removing ambient occlusion, using just a static number for height or setting opacity to 1 will solve the issue but makes it impossible to achieve the needed visual presentation for my layer.

Iniziate con la riproduzione in Dart fornita nell’issue e confrontate le due configurazioni di fill-extrusion, concentrandovi su ambient occlusion, opacità e altezza basata su espressioni. Tracciate se il comportamento viene introdotto dall’integrazione Flutter o dall’implementazione di rendering sottostante di Mapbox; il lavoro è completato quando il layer viene renderizzato senza sfarfallio né artefatti nelle condizioni segnalate.