[@nativescript/google-maps] Marker info window not working on IOS

Hi, I tried to use custom marker info window.
First of all, Could you let me know proper way to implement this, since there is not clear instruction from documentation.
Anyway, I implemented like this, at least works on Android.

mapView.on('markerInfoWindow', (e: MarkerInfoEvent) => {
if (e.marker.userData.id === item.id) {
let infoTemplate: GridLayout = new GridLayout();
/* create a view that I want to customize manually */
...

e.view = infoTemplate;

});

marker.showInfoWindow();

At least works on Android but not on IOS.
Title & snippet from MarkerOptions, then IOS show the info on the marker.

まず、iOS 上の @nativescript/google-maps でカスタム markerInfoWindow フローを再現し、説明されている Android の動作と比較します。marker.showInfoWindow() が呼び出されたときに e.view がどのように扱われるかを確認します。iOS でカスタム情報ウィンドウが表示され、既存の title と snippet の動作が維持されれば完了です。