WPF Ribbon App no buttons configured

[cthue2]

Describe the bug

Selecting a WPF, Ribbon project type using code-behind, the ribbon does not show any buttons for the sample pages. The ribbon only contains "Common Group 1" and "Common Group 2".

The views are present in the solution explorer:

To Reproduce

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Additional context

My template studio settings

<xml
    xmlns:genTemplate="http://schemas.microsoft.com/appx/developer/templatestudio">
    <genTemplate:Metadata>
        <genTemplate:Item Name="generator" Value="Template Studio"/>
        <genTemplate:Item Name="wizardVersion" Version="v5.3" />
        <genTemplate:Item Name="projectType" Value="Ribbon" />
        <genTemplate:Item Name="framework" Value="CodeBehind" />
        <genTemplate:Item Name="platform" Value="Wpf" />
    </genTemplate:Metadata>
</xml>

Applies to the following platforms:

• WinUI
• WPF
• UWP

About your setup

• Visual Studio Version:
• Template Studio Wizard Version:
• Windows Build: