Uno: Windows Community Toolkit fails after update to latest preview Uno.UI package

[MartinZikmund]

Current behavior

After upgrading Uno.UI to the latest version (3.0.0-dev.412), using Uno.Microsoft.Toolkit.Uwp (6.1.0-build.71.g38c59ea2a0) causes build error on Android and iOS:

Mono.Linker.MarkException: Error processing method: 
'System.Void Microsoft.Toolkit.Uwp.UI.Controls.GlobalStaticResources/<>c::
<get_SystemControlVSNotificationButtonBackgroundBrush___HighContrast>b__89_0(
Windows.UI.Xaml.Media.SolidColorBrush)' in assembly: 'Microsoft.Toolkit.Uwp.UI.Controls.dll' 
---> Mono.Cecil.ResolutionException: Failed to resolve Windows.UI.Color
 Uno.UI.GlobalStaticResources::get_SystemColorWindowColor()

Expected behavior

No build error.

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

Reference latest preview version of Uno.UI and Uno.Microsoft.Toolkit.Uwp packages.

Environment

Nuget Package: Uno.UI

Package Version(s): 3.0.0-dev.412

Affected platform(s):

• [x] iOS
• [x] Android
• [ ] WebAssembly
• [ ] WebAssembly renderers for Xamarin.Forms
• [ ] macOS
• [ ] Windows
• [ ] Build tasks
• [ ] Solution Templates

[jeromelaban]

It's expected, we'll be updating it to use the proper version soon.

[dp901]

Upgrading to the latest Uno.UI (3.0.0-dev618) gives me a different error, I don't know if this is part of the same problem:
Unhandled Exception: Mono.Linker.MarkException: Error processing method: 'System.Void Microsoft.Toolkit.Uwp.UI.Controls.DataGridComboBoxColumn::set_FontWeight(Windows.UI.Text.FontWeight)' in assembly: 'Microsoft.Toolkit.Uwp.UI.Controls.DataGrid.dll' ---> Mono.Cecil.ResolutionException: Failed to resolve System.Int32 Windows.UI.Text.FontWeight::get_Weight()

[jeromelaban]

@dp901 yes, this is expected as well, it will be fixed in the same batch.

[EdBlacker]

We'd like to use MSAL so we need to upgrade beyond 3.0.0-dev.471, but we also use the toolkit and after upgrading to v3.0.0-dev.636 we get
Unhandled Exception: Mono.Linker.MarkException: Error processing method: 'System.Object Microsoft.Toolkit.Uwp.UI.Controls.GlobalStaticResources::get_TabViewItemHeaderBackground()' in assembly: 'Microsoft.Toolkit.Uwp.UI.Controls.dll' ---> Mono.Cecil.ResolutionException: Failed to resolve Windows.UI.Xaml.Media.SolidColorBrush Uno.UI.GlobalStaticResources::get_SystemControlTransparentBrush()
.nuget\packages\uno.wasm.bootstrap\1.2.0\build\Uno.Wasm.Bootstrap.targets 124

[jeromelaban]

The latest published packages for Uno.Microsoft.Toolkit.* are now compatible with the latest Uno 3.0 dev bits.