Merge pull request #397 from LoRdPMN/master

Defaults KeyboardNavigation.IsTabStop of TransitioningContent to "False"

Author: ButchersBoy

MaterialDesignThemes.Wpf/Themes/Generic.xaml

@@ -850,8 +850,8 @@
         </Setter>
     </Style>
 
-    <Style TargetType="{x:Type transitions:TransitioningContentBase}">
-        
+    <Style TargetType="{x:Type transitions:TransitioningContentBase}">
+        <Setter Property="KeyboardNavigation.IsTabStop" Value="False"/>
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="{x:Type transitions:TransitioningContentBase}">