DialogHost Disappears Question

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Hi,

I started using DialogHost to popup a dialog to edit some properties of a currently selected item.
However if I switch dialogs while the Edit dialog is displayed, and then return back
the Edit dialog disappears and all I see is the gray parent dialog and no way to recover.

In MainWindows.xaml I have:

Basically the same structure as the MaterialDesign demo, where I have a DrawerHost to popup
the main menu views that you can select from (Home, Inventory, Billing, etc.)
One of the menu items is "Inventory"

In InventoryViewControl.xaml I have another DialogHost so I can popup edit controls for selected items.

In the ViewModel for the InventoryViewControl I have:

private async void OnEditOwnerDialog(object _)
{
// The view associated with this model is defined in InventoryViewControl.xaml !!
var model = new OwnerViewControlModel(SelectedOwnerId);
object result = await MaterialDesignThemes.Wpf.DialogHost.Show(model, "Inventory");
SaveOrCancel answer = (SaveOrCancel)(result ?? SaveOrCancel.None);
switch(answer)
{

In the picture below, showing the RootDialog Drawer menu, the Inventory in the background
and the Owner Information from the OwnerViewControl showing.

If I select "Billing" it switches to Billing, and then when I come back to "Inventory"
all I see is the gray inventory and the OwnerViewControl is not showing and no way to
get it.

Is there an event that I can use to make it pop back up, or would it better to try
to prevent the RootDialog from being able to select a different item?


Thoughts?

Start with MainWindows.xaml and InventoryViewControl.xaml, focusing on the nested DialogHost elements identified as RootDialog and Inventory. Trace the OnEditOwnerDialog call to DialogHost.Show while switching between the Inventory and Billing views. Done should define and verify the intended behavior when returning to Inventory: the owner dialog remains recoverable or navigation is appropriately prevented.

Written by the indexing model from the issue text.