Hololens2 virtual keyboard not opening after javascr... | MicrosoftEdge/WebView2Feedback

Description

Hololens2 virtual keyboard not opening after javascript "beforeunload" event.

Version
SDK: com.microsoft.mixedreality.webview.unity-0.17.1-pre.3.tgz
Runtime: Unity2020.3.33
Framework: Unity2020.3.33, MRTK2.8.3
OS: (Hololens2) 22621.1120.arm64fre.ni_release_svc_sydney_rel_prod.230707-1012

Regression
Was this working before but has regressed? > No.
If yes, what version did this last work on?

Repro Steps

Clone this repository.
https://github.com/MicrosoftEdge/WebView2Samples/
Resolve compilation errors
- Do "Restore Features" in Mixed Reality Feature Tool.
- remove this line from package.json
```
"com.unity.collab-proxy": "2.0.3",
```
Open this sample in UnityEditor.
https://github.com/MicrosoftEdge/WebView2Samples/tree/main/GettingStartedGuides/HoloLens2_GettingStarted/HoloLens2GetStartedApp
Set "Current URL" of "WebView"
https://ydev0927.github.io/ForWebView2Issues/beforeunload_page.html

<!-- beforeunload_page.html -->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Page</title>
    <script type="text/javascript">
        window.addEventListener('beforeunload', (event) => {
            event.preventDefault();
            event.returnValue = '';
        });
    </script>
</head>
<body>
    <input type="text" />
    <br><br>
    <input type="button" onclick="alert('test')" value="alert" />
    <br><br>
    <a href="./beforeunload_page.html">reload</a>
</body>
</html>

Attach this script to "Canvas"

using Microsoft.MixedReality.Toolkit.Input;
using Microsoft.MixedReality.WebView;
using UnityEngine;

public class WebViewInputProvider : MonoBehaviour, IMixedRealityPointerHandler
{
    WebView webViewComponent => GetComponentInChildren<WebView>();

    private IWebView webView;

    private void Start()
    {
        webViewComponent.GetWebViewWhenReady((IWebView webView) =>
        {
            this.webView = webView;
        });
    }

    private void SendMouseButton(Vector2 webViewPoint, WebViewMouseEventData.EventType eventType)
    {
        IWithMouseEvents mouseEventsWebView = webView as IWithMouseEvents;
        if (mouseEventsWebView == null)
            return;

        WebViewMouseEventData mouseEvent = new WebViewMouseEventData
        {
            X = (int)webViewPoint.x,
            Y = (int)webViewPoint.y,
            Type = eventType,
            Button = WebViewMouseEventData.MouseButton.ButtonLeft,
            TertiaryAxisDeviceType = WebViewMouseEventData.TertiaryAxisDevice.PointingDevice
        };

        // Propagate the event to the WebView plugin.
        mouseEventsWebView.MouseEvent(mouseEvent);
    }

    private Vector2 ConvertToWebViewSpace(Vector3 worldPos)
    {
        var localPos = webViewComponent.transform.InverseTransformPoint(worldPos);
        var localXYperBase = new Vector2(localPos.x, localPos.y);
        var localXYper = (localXYperBase * new Vector2(1, -1)) + new Vector2(0.5f, 0.5f);
        var localXY = new Vector2(webView.Width, webView.Height) * localXYper;
        return localXY;
    }

    public void OnPointerDown(MixedRealityPointerEventData eventData) => OnPointerDown(eventData.Pointer.Result.Details.Point);
    private void OnPointerDown(Vector3 point)
    {
        var webViewSpacePoint = ConvertToWebViewSpace(point);
        SendMouseButton(webViewSpacePoint, WebViewMouseEventData.EventType.MouseDown);
    }

    public void OnPointerDragged(MixedRealityPointerEventData eventData) => OnPointerDragged(eventData.Pointer.Result.Details.Point);
    private void OnPointerDragged(Vector3 point)
    {
        var webViewSpacePoint = ConvertToWebViewSpace(point);
        SendMouseButton(webViewSpacePoint, WebViewMouseEventData.EventType.MouseMove);
    }

    public void OnPointerUp(MixedRealityPointerEventData eventData) => OnPointerUp(eventData.Pointer.Result.Details.Point);
    private void OnPointerUp(Vector3 point)
    {
        var webViewSpacePoint = ConvertToWebViewSpace(point);
        SendMouseButton(webViewSpacePoint, WebViewMouseEventData.EventType.MouseUp);
    }

    public void OnPointerClicked(MixedRealityPointerEventData eventData)
    {
    }
}

Run on Hololens.
Tapping opens a virtual keyboard.
But when I tap after tapping "reload", the virtual keyboard doesn't open.

Screenshots

Additional context

AB#45673465

Hololens2 virtual keyboard not opening after javascript "beforeunload" event

Description

Contributor guide

First steps

Assessment

Hololens2 virtual keyboard not opening after javascript "beforeunload" event

Description

Contributor guide

First steps

Assessment

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