Description

When programmatically adding MenuFlyoutItems to MenuFlyoutSubItems they are not visible. There doesn't seem to be a Visible property or another way to make them visible.

• This was tested on Windows.
• This was tested on Maui versions 8 and 9.
• The items seem to be added, but they are not visible. You can list them and remove them after they have been added.
• According to this blog this works on MacOS but special handling is required.

Steps to Reproduce

1. Run the example, and observe that the menu items are as below.
   
2. Click Add Fly Out Item and Add Fly Out Sub Item.
3. Observe that a new MenuFlyoutItem (Added Item) is added under the MenuBarItem Menu Flyout Item.
4. Observe that the MenuFlyoutItem Added Sub Item under the MenuFlyoutSubItem Flyout is not visible. It does seem to be created. Listing all the items contain in Flyout shows it is present (see the Debug output).
   

Link to public reproduction project repository

https://github.com/lendres/Maui-Programmicly-Adding-Menus

Version with bug

9.0.21 SR2.1

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

No response

Affected platforms

Windows

Affected platform versions

Windows 10.0.19045

Did you find any workaround?

None is known.

Relevant log output