setting AreBrowserAcceleratorKeysEnabled does not have effect

[paulvanbladel]

Description

I want to disable F5 based refresh in an maui hybrid blazor app by means of setting AreBrowserAcceleratorKeysEnabled = false.
That doesn't seem to work.
The strange this is that setting other settings like IsZoomControlEnabled does work.

Steps to Reproduce

Start in visual studio a standard maui hybrid blazor app.
We need to and event handler to blazor webview and set the setting in the event handler.

Add BlazorWebViewInitialized event handler in Mainpage.xaml:

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:MauiApp1"
             x:Class="MauiApp1.MainPage"
             BackgroundColor="{DynamicResource PageBackgroundColor}">

    <BlazorWebView x:Name="blazorWebView" HostPage="wwwroot/index.html" BlazorWebViewInitialized="blazorWebView_BlazorWebViewInitialized">
        <BlazorWebView.RootComponents >
            <RootComponent Selector="#app" ComponentType="{x:Type local:Routes}" />
        </BlazorWebView.RootComponents>
    </BlazorWebView>

</ContentPage>

        private void blazorWebView_BlazorWebViewInitialized(object sender, Microsoft.AspNetCore.Components.WebView.BlazorWebViewInitializedEventArgs e)
        {
#if WINDOWS
            e.WebView.CoreWebView2.Settings.IsZoomControlEnabled = false; // THIS WORKS
            e.WebView.CoreWebView2.Settings.AreBrowserAcceleratorKeysEnabled = false; // THIS DOES NOT WORK
#endif
        }

Link to public reproduction project repository

No response

Version with bug

8.0.3

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

maui-windows 8.0.3/8.0.100 VS 17.8.34322.80

Did you find any workaround?

No response

Relevant log output

No response

[jfversluis]

Setting through a custom mapper also doesn't have any effect:

BlazorWebViewHandler.BlazorWebViewMapper.AppendToMapping("NoAccelerators", async (handler, view) =>
{
    await handler.PlatformView.EnsureCoreWebView2Async();
    if (handler.PlatformView.CoreWebView2 is not null)
    {
        handler.PlatformView.CoreWebView2.Settings.AreBrowserAcceleratorKeysEnabled = false;
    }
});

[Eilon]

The same API doesn't seem to work in a plain WinUI app with WebView2 either.

[Eilon]

Works in WPF WebView2.

[Eilon]

I filed MicrosoftEdge/WebView2Feedback#4241 because this appears to be an issue with WebView2 itself and not in .NET MAUI or BlazorWebView. Please add any additional comments/votes/details to that issue.