Describe the bug

Hello. It seems that animation in Menu works only on first use.
Example code:

<Menu
    x:Name="MenuBar"
    Grid.Column="1"
    Margin="0,2.5,0,0"
    hc:MenuAttach.AnimationMode="Top2BottomWithFade"
    hc:MenuAttach.IsEnabledAnimation="True"
    Background="Transparent"
    FontFamily="Open Sans Medium"
    IsMainMenu="True">
    <MenuItem x:Name="File_MenuItem" Header="File">
        <MenuItem
            Header="File" />
</Menu>

Steps to reproduce the bug

1. Create Menu
2. Enable animations
3. Try it

Expected behavior

No response

Screenshots

No response

NuGet package version

HandyControls (Custom version) 3.4.0

IDE

Visual Studio 2022

Framework type

.Net 6.0

Windows version

Windows 11 (22000)

Additional context

No response