AppBarButton doesn't react to AppBarButtonBackgroundPointerOver when in CommandBar

Describe the bug AppBarButton doesn’t react to AppBarButtonBackgroundPointerOver when in CommandBar

Steps to reproduce the bug

Steps to reproduce the behavior: Use this code:

    <Grid>
        <CommandBar Background="Transparent">
            <CommandBar.PrimaryCommands>
                <AppBarButton Icon="Add" Label="Add">
                    <AppBarButton.Resources>
                        <SolidColorBrush x:Key="AppBarButtonBackgroundPointerOver" Color="AliceBlue"/>
                    </AppBarButton.Resources>
                </AppBarButton>
            </CommandBar.PrimaryCommands>
        </CommandBar>

    </Grid>

Expected behavior The AppBarButton should have AliceBlue color when the pointer is over

Screenshots

Version Info

NuGet package version: Microsoft.UI.Xaml 2.4.2

Windows 10 version	Saw the problem?
Insider Build (xxxxx)
November 2019 Update (18363)	Yes
May 2019 Update (18362)
October 2018 Update (17763)
April 2018 Update (17134)
Fall Creators Update (16299)
Creators Update (15063)

Device form factor	Saw the problem?
Desktop	Yes
Mobile
Xbox
Surface Hub
IoT

Additional context

[ivberg]

Do we know what the status of this is? It seems this is an issue with the latest WinUI3 and not sure what the workaround is? I tried using styles (AppBarButtonBackgroundPointerOver) but they don’t seem to be recognized?

https://docs.microsoft.com/en-us/windows/winui/api/microsoft.ui.xaml.controls.appbarbutton?view=winui-3.0 https://docs.microsoft.com/en-us/windows/uwp/design/controls-and-patterns/xaml-styles

[ranjeshj]

CommandBar uses reveal on its children which likely what is causing this. You cannot get both reveal and this color at the same time.