.Net 9 TabBar not work on Mac

[changguangyu]

Description

MauiAppTabBarBug.zip

Steps to Reproduce

1.Create a empty MAUI project using .net 9 with VS Code on Mac.
2.Add the following code :

AppShell.xaml

<TabBar> <Tab Title="Home"> <ShellContent Title="Home" ContentTemplate="{DataTemplate local:MainPage}" Route="MainPage" /> </Tab> <Tab Title="About"> <ShellContent x:Name="AboutPage" Title="About" ContentTemplate="{DataTemplate local:AboutPage}" Route="AboutPage" /> </Tab> </TabBar>

When run app on mac, TabBar is not showing.

Link to public reproduction project repository

No response

Version with bug

9.0.110 SR12

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

Unknown/Other

Affected platforms

macOS

Affected platform versions

Mac

Did you find any workaround?

No response

Relevant log output

[TamilarasanSF4853]

This issue has been validated in Visual Studio Code 1.105.1 with MAUI versions 9.0.0, 9.0.110 and 9.0.120. It can be reproduced on macOS platform.