Cesium map labels only displaying in English

[ghost]

The problem

After setting up Cesium, it works perfecty, but I would like to have the maps in Spanish.
I found that I can do that with the BingMapsImageryProvider and its member culture, so I came up with this.

var imageryProvider = new Cesium.BingMapsImageryProvider({
    url: '//dev.virtualearth.net',
    culture: "es-ES",
    mapStyle: Cesium.BingMapsStyle.AERIAL_WITH_LABELS_ON_DEMAND,
});
console.log(imageryProvider);

$scope.map.scene.imageryLayers.removeAll();
$scope.map.scene.imageryLayers.addImageryProvider(imageryProvider, 0);

$scope.$apply();

As that console.log outputs, the culture is being saved correctly:

Object { _key: "my_key", _resource: {…}, _mapStyle: "AerialWithLabelsOnDemand", _culture: "es-ES", etc...}

But, using one of the images as example, the petition url is still in English: url
(Manually changing them to es-ES works, that proves that the Spanish translation works)

Any help or guidance is apreciated.

[ggetz]

Thanks @iker-molero. I can reproduce, and seems to be a bug in BingMapsImageryProvider.

[ateshuseyin]

According to Cesium documentation (To construct a BingMapsImageryProvider, call BingMapsImageryProvider.fromUrl. Do not call the constructor directly.) I modified the code as below;

const viewer = new Cesium.Viewer("cesiumContainer");

const bing = await Cesium.BingMapsImageryProvider.fromUrl(
  "https://dev.virtualearth.net", {
    culture: "es-ES",
    key: "use-your-own-key",
    mapStyle: Cesium.BingMapsStyle.AERIAL_WITH_LABELS_ON_DEMAND,
});

viewer.scene.imageryLayers.removeAll();
viewer.scene.imageryLayers.addImageryProvider(bing);

When I evaluated the problem I saw that the problem was about metadata request and it did not tested well. I just added culture parameter into metadata request which fixes the problem.