[WASM] ContentControl requires explicit HorizontalContentAlignment and VerticalContentAlignment

[HavenDV]

Current behavior

Differences(In WebAssembly relative to UWP): ContentControl requires explicit HorizontalContentAlignment="Stretch" and VerticalContentAlignment="Stretch"

Expected behavior

How to reproduce it (as minimally and precisely as possible)

https://github.com/HavenDV/Uno.WASM.TemplateBug https://github.com/HavenDV/Uno.WASM.TemplateBug/commit/b6a4c8ed81b38ced515ba79add7849c00d6191d4

Works on UWP/WinUI

Yes

Environment

Nuget Package:

• [x] Uno.UI / Uno.UI.WebAssembly / Uno.UI.Skia>

Nuget Package Version(s):

• 3.8.6 and 3.9.0-dev.104

Affected platform(s): Possible multiple, tested only on WebAssembly

• [ ] iOS
• [ ] Android
• [x] WebAssembly
• [ ] WebAssembly renderers for Xamarin.Forms
• [ ] macOS
• [ ] Skia
  • [ ] WPF
  • [ ] GTK (Linux)
  • [ ] Tizen
• [ ] Windows
• [ ] Build tasks
• [ ] Solution Templates

IDE:

• [ ] Visual Studio 2017 (version: )
• [x] Visual Studio 2019 (version: latest)
• [ ] Visual Studio for Mac (version: )
• [ ] Rider Windows (version: )
• [ ] Rider macOS (version: )
• [ ] Visual Studio Code (version: )

Relevant plugins:

• [ ] Resharper (version: )

[jeromelaban]

Thanks for the report!

Can you create multiple issues? It will be easier to track in individual entries. Can you make sure to add an actual version number instead of latest, just to make sure we're tracking the proper one.

[HavenDV]

Done.

[jeromelaban]

Repro sample: Uno.WASM.TemplateBug-master.zip

[jeromelaban]

Note for contributors

Those seem to have been altered values when dealing with default ContentControl placement based on previous versions of UWP, we may have to revisit the default values:

https://github.com/unoplatform/uno/blob/b7f19b08fd276155868e9a95c29714af80402945/src/Uno.UI/UI/Xaml/Style/Generic/Generic.xaml#L38-L57