More focus improvements

PixiEditor/Views/UserControls/Layers/LayersManager.xaml

@@ -45,7 +45,7 @@
                     </Button.Background>
                 </Button>
             </StackPanel>
-            <StackPanel Orientation="Horizontal" DockPanel.Dock="Right" Margin="0,0,10,0" HorizontalAlignment="Right">
+            <StackPanel Orientation="Horizontal" DockPanel.Dock="Right" Margin="0,0,10,0" HorizontalAlignment="Right" Focusable="True">
                 <Label Content="Opacity" Foreground="White" VerticalAlignment="Center"/>
                 <vws:NumberInput
                         Min="0" Max="100"

PixiEditor/Views/UserControls/Layers/LayersManager.xaml.cs

@@ -370,6 +370,7 @@ namespace PixiEditor.Views.UserControls.Layers
             }
 
             ShortcutController.UnblockShortcutExecutionAll();
+            MoveFocus(new System.Windows.Input.TraversalRequest(System.Windows.Input.FocusNavigationDirection.Next));
         }
 
         private void HandleLayerOpacityChange(float val, Layer layer)