content page base class issue - won't compile

I have a custom generic content page base class:

    public class BasePage<TViewModel> : ContentPage where TViewModel : BaseViewModel

in my subclass I have the code behind :

        public partial class EventsPage : TwinEvents.Core.App.View.BasePage<EventsPageVM>

In the xaml I have:

    <BasePage 
xmlns="http://xamarin.com/schemas/2014/forms" 
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
x:Class="TwinEvents.Core.Events.View.EventsPage"
x:TypeArguments="TwinEvents.Core.Events.View.EventsPageVM"
Title="{Binding Title}"
>

the issue I have is that the generated file won't compile, as it doesn't correctly refernece the BasePage class. It generates this:

    public partial class EventsPage : BasePage<TwinEvents.Core.Events.View.EventsPageVM>

instead of this:

    public partial class EventsPage : TwinEvents.Core.App.View.BasePage<TwinEvents.Core.Events.View.EventsPageVM>

I can temporarily fix it by adding the missing path qualifier.

My question is.. is this a bug? is this expected behaviour? am I doing something wrong?

I mentioned this iin another thread; but realized that was a different problem, hence putting this here instead.

I'm also raising a bug about it - I'll close it if anyone can explain how to make this work.

I'm working around it right now with a bash script that executes whenever I build, and fixes the import statement; but it kind of sucks, especially seeing as the only way I can get Xamarin to run it, is in an external window, so I need to close a terminal window on each build... hmmph