Navigationbar invisible until window is resized on sample

[Levi--G]

Current behavior

I am running a fresh sample with following options: -.NET 8 -Only webassembly and SKIA -MVVM -XAML -Fluent + theme service -no config, http or localisation -+Server + wasm multithreading no PWA and no VSCODE -default rest of options

The navigationbar after going to the second page does not show on desktop/windows (skia) until the window is resized or switched to another display. InvalidateMeasure seems to have no impact.

I noticed the issue is also affected by binding the navigationbar content. If it is binded it works (like main page) but if its a constant text it will not show the entire bar (including primary and secondary icons) although the buttons do still work.

Works: <utu:NavigationBar Content="{Binding Title}"/> Does not work <utu:NavigationBar Content="Second Page"/>

Expected behavior

Navigationbar should be shown right away

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

Either use the zip or create a project with above settings, the sample will not show a navbar on the second page. Only desktop windows was tested.

UnoApp1.zip

Nuget Package: Uno.WinUI

Package Version(s): 5.2.175

Affected platform(s):

• [ ] WebAssembly
• [ ] Android
• [ ] iOS
• [ ] macOS (AppKit)
• [ ] Mac Catalyst
• [ ] Skia
  • [x] WPF
  • [ ] GTK (Linux)
  • [ ] Linux Framebuffer
  • [ ] Tizen
• [ ] Windows

IDE:

• [x] Visual Studio 2022
• [ ] Visual Studio 2019
• [ ] Visual Studio Code
• [ ] Visual Studio for Mac
• [ ] Rider Windows
• [ ] Rider macOS

Relevant plugins:

Anything else we need to know?

[kazo0]

It seems that this is fixed as of package version 5.3.0-dev.12 of Uno. With the upcoming 5.3 stable release, it should include the fix in the next stable packages