PR comments

src/Avalonia.Base/Animation/TransitionObservableBase.cs

@@ -10,7 +10,7 @@ namespace Avalonia.Animation
     /// Provides base for observables implementing transitions.
     /// </summary>
     /// <typeparam name="T">Type of the transitioned value.</typeparam>
-    public abstract class TransitionObservableBase<T> : SingleSubscriberObservableBase<T>, IObserver<double>
+    internal abstract class TransitionObservableBase<T> : SingleSubscriberObservableBase<T>, IObserver<double>
     {
         private readonly IEasing _easing;
         private readonly IObservable<double> _progress;

src/Avalonia.Base/Layout/Layoutable.cs

@@ -205,6 +205,15 @@ namespace Avalonia.Layout
             }
         }
 
+        /// <summary>
+        /// Executes a layout pass.
+        /// </summary>
+        /// <remarks>
+        /// You should not usually need to call this method explictly, the layout manager will
+        /// schedule layout passes itself.
+        /// </remarks>
+        public void UpdateLayout() => (this.GetVisualRoot() as ILayoutRoot)?.LayoutManager?.ExecuteLayoutPass();
+
         /// <summary>
         /// Gets or sets the width of the element.
         /// </summary>

src/Avalonia.Controls/TopLevel.cs

@@ -374,15 +374,6 @@ namespace Avalonia.Controls
 
         ILayoutManager ILayoutRoot.LayoutManager => LayoutManager;
 
-        /// <summary>
-        /// Executes a layout pass.
-        /// </summary>
-        /// <remarks>
-        /// You should not usually need to call this method explictly, the layout manager will
-        /// schedule layout passes itself.
-        /// </remarks>
-        public void UpdateLayout() => LayoutManager?.ExecuteLayoutPass();
-
         /// <summary>
         /// Gets the platform-specific window implementation.
         /// </summary>