Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

WinUI 3 controls in Simple Island App are invisible until focused

Open
  • Is something wrong?
#320 1 comment 0 reactions 0 assignees View on GitHub

Maintainers usually reply within 8 days

Nobody has claimed this yet.

Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Domain
desktop, frontend

Research direction

Start by running the unmodified Simple Island App and inspect the XAML layout containing the StackPanel, WebView2, and bottom Button. Confirm the controls are present but invisible until focused, then verify that they remain visible after focus moves away on the reported Windows App SDK environment.

Written by the indexing model from the issue text.

Description

Building and running the unmodified Simple Island App project results in a window that looks like this:

Screenshot 2023-11-26 142726

However, there are suposed to be WinUI 3 controls on the top and bottom of the WebView2. The XAML has:

    <Grid Padding="10">
        <Grid.RowDefinitions>
            <RowDefinition Height="50"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="50"/>
        </Grid.RowDefinitions>
        <StackPanel Orientation="Horizontal" Grid.Row="0">
            <Button x:Name="Button" Click="ClickHandler">Click Me</Button>
            <TextBox Text="Text goes here" Margin="10" />
        </StackPanel>
        <WebView2 Grid.Row="1" Source="http://bing.com" />
        <Button Grid.Row="2">Last Button</Button>
    </Grid>

So there are supposed to be a Button and TextBox above the WebView2, and another Button below it.

If you click where the TextBox control is supposed to be, it shows up:

Screenshot 2023-11-26 143327

But then if you click away from it, it disappears again.

I'm using Windows 11 23H2, Windows 11 SDK 10.0.22000.0, Visual Studio 17.8.1, and Windows App SDK 1.4.3 (1.4.231115000).

Dominant language
PowerShell
Stars
1k
Forks
335
Avg merge
6d 12h
Merged PRs (30d)
7

Getting set up

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from microsoft/WindowsAppSDK-Samples

All issues in microsoft/WindowsAppSDK-Samples

Similar issues

More Desktop Dev issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.