3Dmap does not show on iOS16

Our application use CesiumJS and draw 3DMap.
Recently we tested on iOS16, 3DMap did not show.
We thought the problem was our application can not get correct https response, but the response was correct.

We tried to update latest cesiumJS, but it does not work too…
We found the same issue occurred on cesiumJS sample app(HelloWorld).

cesium/HelloWorld.html at main · CesiumGS/cesium · GitHub

The result is below.

iOS15.7.
iOs15

iOS16.
iOS16

If anyone know this issue, could you let me know how can I fix it?


Our Environmet

CesiumJS version : 1.99
iOS version : 16.0
XCode : 14.1 and 13.2.1

We run our application on WKWebView.
https://developer.apple.com/documentation/webkit/wkwebview