Type module:Header not found in xmlns clr-namespace:MyModule - xaml

Question

I am trying to dynamically load an MAUI class library using Assembly.Load and open a page from it. This page references another ContentView. It works perfectly fine when running in debug mode, but when just starting the app manually (still compiled using the Debug configuration) it crashes with the following exception:
android.runtime.JavaProxyThrowable: Microsoft.Maui.Controls.Xaml.XamlParseException: Position 11:14. Type module:Header not found in xmlns clr-namespace:MyModule
at Microsoft.Maui.Controls.Xaml.CreateValuesVisitor.Visit(ElementNode node, INode parentNode)
at Microsoft.Maui.Controls.Xaml.ElementNode.Accept(IXamlNodeVisitor visitor, INode parentNode)
at Microsoft.Maui.Controls.Xaml.ElementNode.Accept(IXamlNodeVisitor visitor, INode parentNode)
at Microsoft.Maui.Controls.Xaml.RootNode.Accept(IXamlNodeVisitor visitor, INode parentNode)
at Microsoft.Maui.Controls.Xaml.XamlLoader.Visit(RootNode rootnode, HydrationContext visitorContext, Boolean useDesignProperties)
at Microsoft.Maui.Controls.Xaml.XamlLoader.Load(Object view, String xaml, Assembly rootAssembly, Boolean useDesignProperties)
at Microsoft.Maui.Controls.Xaml.XamlLoader.Load(Object view, String xaml, Boolean useDesignProperties)
at Microsoft.Maui.Controls.Xaml.XamlLoader.Load(Object view, Type callingType)
at Microsoft.Maui.Controls.Xaml.Extensions.LoadFromXaml[Home](Home view, Type callingType)
at MyModule.Home.InitializeComponent()
Here is the Home page:
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:module="clr-namespace:MyModule"
x:Class="MyModule.Home"
BackgroundColor="White"
NavigationPage.HasNavigationBar="False">
<ContentPage.Content>
<StackLayout>
<module:Header />
</StackLayout>
</ContentPage.Content>
</ContentPage>
And here is the ContentView that is being referenced:
<ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="MyModule.Header">
<StackLayout Orientation="Horizontal" HeightRequest="100" >
<Image Source="mylogo.png" HorizontalOptions="Start" Margin="10"></Image>
</StackLayout>
</ContentView>
I also have the same error when running for windows, but on windows the error occurs whether I am debugging or not:
Type module:Header not found in xmlns clr-namespace:MyModule
I have tried adding [assembly: XamlCompilation(XamlCompilationOptions.Compile)] but it also didn't change anything.
I specifically do not want to reference the module project directly and would like to load and register everything dynamically.