[HR] Hot Reload Shell Page stays on loading wheel

[rafael-rosa-knowcode]

Current behavior

When edit the Shell.xaml (Recommended App with ExtendedSplashScreen), and trigger Hot Reload, we have an eternal loading.

When we enter the recommended application,
where we have shell control,
showing the splash screen and close after load,
and we edit the Shell.xaml
and click to Hot Reload,
the screen remains eternally loading
and we can no longer see the MainPage.

ExtendedSplashScreen.Loading.mp4

Expected behavior

When Hot Reload, the ExtendedSplashScreen hide after the page "Load". Or when was loaded, not display.

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

Use this sample project. UnoAppShellRecommended.zip

or create a new one: dotnet new unoapp -o UnoAppShellRecommended -preset "recommended"

Run the App.
Open the Shell.xaml
Edit some line.
Trigger Hot Reload.
And the app will display the Loading.

Nuget Package:

Package Version(s):

Affected platform(s):

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

IDE:

• 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?

[Jen-Uno]

@rafael-rosa-knowcode is this still an issue?

[erikvilima]

@Jen-Uno @rafael-rosa-knowcode still an issue with the latest Uno.Sdk dev 6.1.0-dev.246

[kazo0]

@erikvilima / @rafael-rosa-knowcode

Is there any error that appears in the logs after the hot reload has occurred?

[erikvilima]

I see only these but I doubt they are useful:

Debug Console

'toolkit1405.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.6\System.Resources.ResourceManager.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'toolkit1405.exe' (CoreCLR: clrhost): Loaded 'C:\C\toolkit1405\toolkit1405\bin\Debug\net9.0-desktop\Tmds.DBus.Protocol.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'toolkit1405.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.6\System.Formats.Asn1.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'toolkit1405.exe' (CoreCLR: clrhost): Loaded 'C:\C\toolkit1405\toolkit1405\bin\Debug\net9.0-desktop\Uno.UI.HotDesign.Xaml.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'toolkit1405.exe' (CoreCLR: clrhost): Loaded 'C:\C\toolkit1405\toolkit1405\bin\Debug\net9.0-desktop\Microsoft.Extensions.Diagnostics.Abstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.

Hot Reload

17:18:03.93 Code changes were successfully applied.

cc @kazo0

[kazo0]

Perhaps the WASM app with the browser console will show something interesting

[erikvilima]

@kazo0 That's all I see:

I got the Debug Output after I've set LogLevels to Trace.

Output-Debug.txt

Everything that happened after The thread 22948 has exited with code 0 (0x0). was after I hit the Hot Reload button.

[kazo0]

For this one, per Nick:

After hot reload it's defaulting back to the initial state (which I assume is loading)
we'll need to make it HR aware - I can't recall how the data (ie the implementation of the loading interface) for the extended splash is assigned but we need to make sure that this is done in a way that HR will copy across the data as part of updating the UI