I have the following code for my regular ContentPage controller

public class ContentPageController : PageController
    {
        public ActionResult Index(ContentPage currentPage)
        {
            return View(currentPage);
        }
    }

and this for rendering in ContentArea

[TemplateDescriptor(TemplateTypeCategory = TemplateTypeCategories.MvcPartialController, AvailableWithoutTag = false, Tags = new string[] { "List" })]
    public class PartialContentPageController : PageController
    {
        public ActionResult Index(ContentPage currentPage)
        {     
            return PartialView("/Views/ContentPage/ListItem.cshtml", viewModel);
        }
    }

This is working fine if rendered like @Html.PropertyFor(m => m.MyContentArea, new { Tag = "List" }) in a page view. But, when I have the exact same code in a view for a block. The action on the PartialContentPageController don't get hit. If I set AvailableWithoutTag = true, it hits the action, but I loose the control to choose which view to use for rendering.

Functionality for tags seems to break if a page is rendered inside a ContentArea which is also rendered inside a ContentArea.

Any ideas?