WPF Control Style of Button not detecting IsMouseOver

So am trying to create button style (background opacity to black with 20% alpha and default colour of text changes to clear white) with using ResourceDictionary. I do include file into App.xaml like: <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="Style/ButtonStyles.xaml"/> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> and to button am applying x:Key Style="{StaticResource TopBarButtons}" so my style of it looks like (random… Read More WPF Control Style of Button not detecting IsMouseOver