MauiSplashScreen does not show under HarmonyOS 4.2 and Debug mode

[Ebola-Chan-bot]

Description

MauiSplashScreen does not show when the app is started by Visual Studio Debug through USB connection. It shows normally if started independently on the phone.

Steps to Reproduce

Create a new MAUI App in Visual Studio. Do no modifications and directly run Debug on the USB-connected phone. The splash screen ".NET" does not show.
Tap the app icon on the phone. The splash screen shows.

Link to public reproduction project repository

https://github.com/Ebola-Chan-bot/MirageTank/tree/master/MauiApp2

Version with bug

9.0.50 SR5

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

HarmonyOS 4.2

Did you find any workaround?

Currently I have no idea how to show the splash screen when debugging.

Relevant log output

[jfversluis]

Unfortunately, HarmonyOS is not a officially supported platform for .NET MAUI. Also, this sounds like it might be more of a tooling problem since it only doesn't work when starting a debug session from Visual Studio.

If someone has any idea about this, that's great, but we won't be able to look into this. Sorry!