How to style with corners rounded on shell topBar to all pages including using Routing registration

Question

Hi I`m trying to customize the default shell topbar in Android and iOS

I would do like to set some rounded corners on it

i`m trying to follow this https://vladislavantonyuk.github.io/articles/Customizing-.NET-MAUI-Shell/

I almost get done, but when a navigate to next page the things does not going right. see images

First PAge is it OK:

next Page is not (like a styled topbar is over the default one) :

I saw that the first page is set in AppShell.xaml

<ShellContent Title="" ContentTemplate="{DataTemplate local:SettingsPage}" Route="SettingsPage" />

and the next page is set in AppShell.xaml.cs

Routing.RegisterRoute(nameof(LoginPage), typeof(LoginPage)); using Routing because of the navigate stack handler, like to set the Backbutton.

When a put the LoginPage at the <ShellContent... too it works as expected

But the Backbutton disappear

• I would like that the Login page looks like the Settings Page, without the Blanks I background behind the NavBar.I would like that the Login page looks like the Settings Page, without the Blanks background behind the NavBar. Here a little project to reproduce https://github.com/elfiservice/maui-customizing-shell-test

I already created a Bug in the MAUI repository https://github.com/dotnet/maui/issues/25202