✅ Avalonia UI button doesn't color by hover!

 <UserControl.Styles>
  <Style Selector="Button:pointerover">

      <Setter Property="Width" Value="300"></Setter>
      <Setter Property="Background" Value="Red"></Setter>
  </Style>
  <Style Selector="Button">

      <Setter Property="Background" Value="Green"></Setter>
  </Style>


<Button Content="Test"></Button>
 </UserControl.Styles>