lmadhavan

public static class KeyboardAcceleratorWorkaround
{
    public static void CreateShadowAccelerators(this MenuBar menuBar, UIElement target)
    {
        foreach (var menu in menuBar.Items)
        {
            ProcessItems(menu.Items, target);
        }
    }

lmadhavan

<muxc:MenuBar>
    <muxc:MenuBarItem Title="Test Menu">
        <MenuFlyoutItem Text="Test Command" Command="{x:Bind TestCommand}">
            <MenuFlyoutItem.KeyboardAccelerators>
                <KeyboardAccelerator Modifiers="Control" Key="T" />
            </MenuFlyoutItem.KeyboardAccelerators>
        </MenuFlyoutItem>
    </muxc:MenuBarItem>
</muxc:MenuBar>