Merge branch 'master' into standardized-window-startup-size

native/Avalonia.Native/src/OSX/window.mm

@@ -369,12 +369,9 @@ public:
 
     virtual void UpdateCursor()
     {
-        [View resetCursorRects];
         if (cursor != nil)
         {
-             auto rect = [Window frame];
+            [cursor set];
-             [View addCursorRect:rect cursor:cursor];
-             [cursor set];
         }
     }
     
@@ -425,6 +422,7 @@ private:
     {
         WindowEvents = events;
         [Window setCanBecomeKeyAndMain];
+        [Window disableCursorRects];
     }
     
     virtual HRESULT Show () override

src/Avalonia.Animation/Animatable.cs

@@ -55,6 +55,11 @@ namespace Avalonia.Animation
             }
             set
             {
+                if (value is null)
+                    return;
+
+                if (_previousTransitions is null)
+                    _previousTransitions = new Dictionary<AvaloniaProperty, IDisposable>();
 
                 SetAndRaise(TransitionsProperty, ref _transitions, value);
             }
@@ -70,7 +75,7 @@ namespace Avalonia.Animation
             if (_transitions is null || _previousTransitions is null || e.Priority == BindingPriority.Animation) return;
 
             // PERF-SENSITIVE: Called on every property change. Don't use LINQ here (too many allocations).
-            foreach (var transition in Transitions)
+            foreach (var transition in _transitions)
             {
                 if (transition.Property == e.Property)
                 {

src/Shared/PlatformSupport/AssetLoader.cs

@@ -242,6 +242,7 @@ namespace Avalonia.Shared.PlatformSupport
                     throw new InvalidOperationException(
                         $"Assembly {name} needs to be referenced and explicitly loaded before loading resources");
 #else
+                    name = Uri.UnescapeDataString(name);
                     AssemblyNameCache[name] = rv = new AssemblyDescriptor(Assembly.Load(name));
 #endif
                 }