Navigation bar overlaps title bar when replacing MainPage for a MAUI 6.0 Windows App

Description

This is in relation to https://github.com/dotnet/maui/issues/10710 being closed as fixed. However, the bug is still present in MAUI 6.0, i.e. the LTS product.

Just to confirm that @PureWeen’s fix for 7.0 is good, this only affects 6.0.

.Net 6 with splash page

.Net 7 with splash page

Steps to Reproduce

1. Create a new Default MAUI App using .Net 6.0
2. Add a new content page call SplashPage.xaml
3. In App.xaml.cs change the MainPage initialisation to MainPage = new SplashPage();
4. Add a Loaded event handler in SplashPage.xaml.cs
5. In the event handler reset the MainPage to be the default AppShell - App.Current.MainPage = new AppShell();

Link to public reproduction project repository

https://dev.azure.com/JohnHunter0895/MauiBugs/_git/MauiBugs/branches?_a=all

Version with bug

7.0 (current)

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

Windows SDK 10.0.22000.194

Did you find any workaround?

Tried the same workaround used in https://github.com/dotnet/maui/issues/10710 but this results in spurious padding at the top of the flyout items

Microsoft.Maui.Handlers.WindowHandler.Mapper.AppendToMapping(nameof(IWindow), (h, v) => { (v.Handler.PlatformView as MauiWinUIWindow).ExtendsContentIntoTitleBar = false; });

Relevant log output

No response