[NUI] Fix wrong prev size assigning on scroll relayout. (#3728)

diff --git a/src/Tizen.NUI.Components/Controls/ScrollableBase.cs b/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
index 72591cc..3e10b34 100755 (executable)
--- a/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
+++ b/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
@@ -755,8 +755,8 @@ namespace Tizen.NUI.Components
                 }
             }
 
-            previousContainerSize = ContentContainer.Size;
-            previousSize = Size;
+            previousContainerSize = new Size(ContentContainer.Size);
+            previousSize = new Size(Size);
         }
 
         private bool ReviseContainerPositionIfNeed()