Fix #265

PixiEditor/Helpers/Extensions/ParserHelpers.cs

@@ -25,6 +25,7 @@ namespace PixiEditor.Helpers.Extensions
             {
                 document.SetMainActiveLayer(0);
             }
+            document.Renderer.ForceRerender();
 
             return document;
         }

PixiEditor/Models/Controllers/LayerStackRenderer.cs

@@ -66,6 +66,11 @@ namespace PixiEditor.Models.Controllers
             Update(new Int32Rect(0, 0, finalSurface.Width, finalSurface.Height));
         }
 
+        public void ForceRerender()
+        {
+            Update(new Int32Rect(0, 0, finalSurface.Width, finalSurface.Height));
+        }
+
         public void Dispose()
         {
             finalSurface.Dispose();