Runtime exception in .net Core 3.1 App when changing p:AssemblyVersion on build

I have a .net Core 3.1 WPF app. And I compile it with the command:

`dotnet publish -o "output" -c Release "Foo.sln" -p:AssemblyVersion="1.2.3.4"`

If I leave out the AssemblyVersion parameter all works fine. But with this parameter I get a runtime exception on startup.

"Could not register named object. Cannot register duplicate name 'MaxDetailsContentHeightHelper' in this scope."

It seems to be a line in the XAML
``

I have no idea where to look for or what could be the reason.