naoki-yamamoto-ymh
commented
2 months ago I have the same problem. Here is a sample code (omitted XAML / WinUI 3).
using Microsoft.UI.Xaml;
using Microsoft.Windows.AppLifecycle;
using System;
using System.Diagnostics;
using System.Threading;
namespace Sample {
public partial class App: Application {
private Window? window;
public App() {
InitializeComponent();
}
protected override async void OnLaunched(LaunchActivatedEventArgs args) {
var main = AppInstance.FindOrRegisterForKey("main");
if (main.IsCurrent) {
window = new MainWindow {};
window.Activate();
// some heavy process.
Thread.Sleep(2000);
} else {
await main.RedirectActivationToAsync(AppInstance.GetCurrent().GetActivatedEventArgs());
try {
Process.GetCurrentProcess().Kill();
} catch {
}
}
}
}
public sealed partial class MainWindow: Window {
public MainWindow() {
InitializeComponent();
InitializeWebView();
}
private async void InitializeWebView() {
await WebView.EnsureCoreWebView2Async();
WebView.Source = new("https://example.com/");
}
}
}https://github.com/user-attachments/assets/0d2cb713-c0b7-4a71-af64-35481c22447c
champnic
Thomr77
salvadordf
NicholasChrzan
Aishwarya-Jeyaraj
hangdongxue
vzhilong
nirdil
What happened?
When initializing any WebView, a blank window briefly appears before disappearing. This is most noticeable on app startup where the window can appear for a few seconds, but it is also noticeable sometimes very briefly on any new WebView initialization.
This seems to be a relatively recent bug that was introduced to the production Edge channel.
Additionally, this issue does not occur in the Edge Dev channel, which suggests it has been resolved in a later version. I’m unsure if this is a documented bug.
Can anyone confirm which version includes this fix and when it will be available in the production channel?
Importance
Important. My app's user experience is significantly compromised.
Runtime Channel
Stable release (WebView2 Runtime)
Runtime Version
129.0.2792.52
SDK Version
1.0.2839
Framework
WinUI2/UWP
Operating System
Windows 10
OS Version
10.0.19045
Repro steps
Not reproducible on a small sample project
Repros in Edge Browser
No, issue does not reproduce in the corresponding Edge version
Regression
Regression in newer Runtime
Last working version (if regression)
No response
AB#54137238