From ac660567f737f990f00e0c757850f6f08e0839b0 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Wed, 3 Jul 2019 11:20:09 +0200
Subject: [PATCH] Fix horizontal StackLayout.

---
 src/Avalonia.Layout/StackLayout.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.Layout/StackLayout.cs b/src/Avalonia.Layout/StackLayout.cs
index 3cc094f091..e89d178b0e 100644
--- a/src/Avalonia.Layout/StackLayout.cs
+++ b/src/Avalonia.Layout/StackLayout.cs
@@ -293,9 +293,11 @@ namespace Avalonia.Layout
         {
             if (e.Property == OrientationProperty)
             {
+                var orientation = (Orientation)e.NewValue;
+
                 //Note: For StackLayout Vertical Orientation means we have a Vertical ScrollOrientation.
                 //Horizontal Orientation means we have a Horizontal ScrollOrientation.
-                _orientation.ScrollOrientation = (ScrollOrientation)e.NewValue;
+                _orientation.ScrollOrientation = orientation == Orientation.Horizontal ? ScrollOrientation.Horizontal : ScrollOrientation.Vertical;
             }
 
             InvalidateLayout();