I have wasted now 3 days triying to put the icon on the app.
I use https://makeappicon.com/ and download the files. Replace the AppIcon.appiconset folder. It not work.
I try everything I found, including cleaning, erasing emulator, erasing vs caches, and finally a full clean reinstalling of everything with the Visual Studio Mac installer.
Still the same.
I create a new black project and add the icons.
Still the same.
Finally I create a xcode project, do the same and it work at first try.
Also, I remove the AppIcon in the asset, manually create it again and manually set the icons.
I have in the .fsproj:
<ItemGroup>
<Folder Include="Data\" />
<Folder Include="App\img\" />
<Folder Include="App\img\provemax\" />
<Folder Include="Assets.xcassets\AppIcon.appiconset\" />
</ItemGroup>
<ImageAsset Include="Assets.xcassets\Contents.json" />
<ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Contents.json" />
<ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon-App-20x20%401x.png" />
<ImageAsset Include="Assets.xcassets\AppIcon.appiconset\ItunesArtwork%402x.png" />
P.D: I also create a empty project in C#, same result, link here: