diff --git a/spine-ts/README.md b/spine-ts/README.md
index 9128f9a3b..213d659cd 100644
--- a/spine-ts/README.md
+++ b/spine-ts/README.md
@@ -56,8 +56,8 @@ You can include a module in your project via a `<script>` tag from the [unpkg](h
 <script src="https://unpkg.com/@esotericsoftware/spine-player@4.0.*/dist/iife/spine-player.js">
 <link rel="stylesheet" href="https://unpkg.com/@esotericsoftware/spine-player@4.0.*/dist/spine-player.css">
 
-// spine-ts WebGL
-<script src="https://unpkg.com/@esotericsoftware/spine-threejs@4.0.*/dist/iife/spine-webgl.js">
+// spine-ts ThreeJS
+<script src="https://unpkg.com/@esotericsoftware/spine-threejs@4.0.*/dist/iife/spine-threejs.js">
 ```
 
 We also provide `js.map` source maps. They will be automatically fetched from unpkg when debugging code of a spine-module in Chrome, Firefox, or Safari, mapping the JavaScript code back to its original TypeScript sources.
@@ -113,4 +113,4 @@ The final command `npm run dev` will start a local web server at http://127.0.0.
 
 You can then open Visual Studio Code to inspect, edit, and debug the source code. We also supply launch configurations to start examples and demos in debug mode, so you can debug them right inside Visual Studio code.
 
-To build the artifacts as they are published to NPM, run `npm run build`.
\ No newline at end of file
+To build the artifacts as they are published to NPM, run `npm run build`.
diff --git a/spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SSpineWidget.cpp b/spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SSpineWidget.cpp
index c5d124048..4a845f1f1 100644
--- a/spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SSpineWidget.cpp
+++ b/spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SSpineWidget.cpp
@@ -65,7 +65,12 @@ void SSpineWidget::SetData(USpineWidget *Widget) {
 		skeleton->setToSetupPose();
 		skeleton->updateWorldTransform();
 		Vector<float> scratchBuffer;
-		skeleton->getBounds(this->boundsMin.X, this->boundsMin.Y, this->boundsSize.X, this->boundsSize.Y, scratchBuffer);
+		float x, y, w, h;
+		skeleton->getBounds(x, y, w, h, scratchBuffer);
+		boundsMin.X = x;
+		boundsMin.Y = y;
+		boundsSize.X = w;
+		boundsSize.Y = h;
 	}
 }
 
diff --git a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Asset Types/SkeletonDataAssetInspector.cs b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Asset Types/SkeletonDataAssetInspector.cs
index be77de911..bf3a76b56 100644
--- a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Asset Types/SkeletonDataAssetInspector.cs	
+++ b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Asset Types/SkeletonDataAssetInspector.cs	
@@ -154,7 +154,7 @@ namespace Spine.Unity.Editor {
 
 		void Clear () {
 			preview.Clear();
-			targetSkeletonDataAsset.Clear();
+			SpineEditorUtilities.ClearSkeletonDataAsset(targetSkeletonDataAsset);
 			targetSkeletonData = null;
 		}
 
diff --git a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/AssetUtility.cs b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/AssetUtility.cs
index 7542516bb..92c4d41cf 100644
--- a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/AssetUtility.cs
+++ b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/AssetUtility.cs
@@ -493,7 +493,7 @@ namespace Spine.Unity.Editor {
 						}
 
 						Debug.LogFormat("Changes to '{0}' or atlas detected. Clearing SkeletonDataAsset: {1}", skeletonJSONPath, localPath);
-						skeletonDataAsset.Clear();
+						SpineEditorUtilities.ClearSkeletonDataAsset(skeletonDataAsset);
 
 						string guid = AssetDatabase.AssetPathToGUID(AssetDatabase.GetAssetPath(skeletonDataAsset));
 						string lastHash = EditorPrefs.GetString(guid + "_hash");
@@ -978,7 +978,7 @@ namespace Spine.Unity.Editor {
 					AssetDatabase.CreateAsset(skeletonDataAsset, filePath);
 				} else {
 					skeletonDataAsset.atlasAssets = atlasAssets;
-					skeletonDataAsset.Clear();
+					SpineEditorUtilities.ClearSkeletonDataAsset(skeletonDataAsset);
 				}
 				var skeletonData = skeletonDataAsset.GetSkeletonData(true);
 				if (skeletonData != null)
diff --git a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/BlendModeMaterialsUtility.cs b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/BlendModeMaterialsUtility.cs
index d7a3977a9..476b2d556 100644
--- a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/BlendModeMaterialsUtility.cs
+++ b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/BlendModeMaterialsUtility.cs
@@ -96,7 +96,7 @@ namespace Spine.Unity.Editor {
 				}
 			}
 
-			skeletonDataAsset.Clear();
+			SpineEditorUtilities.ClearSkeletonDataAsset(skeletonDataAsset);
 			skeletonData = skeletonDataAsset.GetSkeletonData(true);
 			if (anyMaterialsChanged)
 				ReloadSceneSkeletons(skeletonDataAsset);
@@ -164,7 +164,7 @@ namespace Spine.Unity.Editor {
 
 			var skinEntries = new List<Skin.SkinEntry>();
 
-			skeletonDataAsset.Clear();
+			SpineEditorUtilities.ClearSkeletonDataAsset(skeletonDataAsset);
 			skeletonDataAsset.isUpgradingBlendModeMaterials = true;
 			SkeletonData skeletonData = skeletonDataAsset.GetSkeletonData(true);
 
diff --git a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/DataReloadHandler.cs b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/DataReloadHandler.cs
index 2125ff616..d29be7b9e 100644
--- a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/DataReloadHandler.cs
+++ b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/DataReloadHandler.cs
@@ -91,8 +91,7 @@ namespace Spine.Unity.Editor {
 				}
 
 				foreach (var skeletonDataAsset in skeletonDataAssetsToReload) {
-					skeletonDataAsset.Clear();
-					skeletonDataAsset.GetSkeletonData(true);
+					ReloadSkeletonDataAsset(skeletonDataAsset, false);
 				}
 
 				foreach (var skeletonRenderer in activeSkeletonRenderers)
@@ -119,14 +118,24 @@ namespace Spine.Unity.Editor {
 				}
 			}
 
+			public static void ClearAnimationReferenceAssets (SkeletonDataAsset skeletonDataAsset) {
+				ForEachAnimationReferenceAsset(skeletonDataAsset, (referenceAsset) => referenceAsset.Clear());
+			}
+
 			public static void ReloadAnimationReferenceAssets (SkeletonDataAsset skeletonDataAsset) {
+				ForEachAnimationReferenceAsset(skeletonDataAsset, (referenceAsset) => referenceAsset.Initialize());
+			}
+
+			private static void ForEachAnimationReferenceAsset (SkeletonDataAsset skeletonDataAsset,
+				System.Action<AnimationReferenceAsset> func) {
+
 				string[] guids = UnityEditor.AssetDatabase.FindAssets("t:AnimationReferenceAsset");
 				foreach (string guid in guids) {
 					string path = UnityEditor.AssetDatabase.GUIDToAssetPath(guid);
 					if (!string.IsNullOrEmpty(path)) {
 						var referenceAsset = UnityEditor.AssetDatabase.LoadAssetAtPath<AnimationReferenceAsset>(path);
 						if (referenceAsset.SkeletonDataAsset == skeletonDataAsset)
-							referenceAsset.Initialize();
+							func(referenceAsset);
 					}
 				}
 			}
diff --git a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/SpineEditorUtilities.cs b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/SpineEditorUtilities.cs
index 49ae43cdf..ad0f488f4 100644
--- a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/SpineEditorUtilities.cs
+++ b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/SpineEditorUtilities.cs
@@ -266,14 +266,23 @@ namespace Spine.Unity.Editor {
 			ReinitializeComponent(component);
 		}
 
-		public static void ReloadSkeletonDataAsset (SkeletonDataAsset skeletonDataAsset) {
-			if (skeletonDataAsset != null) {
+		public static void ClearSkeletonDataAsset (SkeletonDataAsset skeletonDataAsset) {
+			skeletonDataAsset.Clear();
+			DataReloadHandler.ClearAnimationReferenceAssets(skeletonDataAsset);
+		}
+
+		public static void ReloadSkeletonDataAsset (SkeletonDataAsset skeletonDataAsset, bool clearAtlasAssets = true) {
+			if (skeletonDataAsset == null)
+				return;
+
+			if (clearAtlasAssets) {
 				foreach (AtlasAssetBase aa in skeletonDataAsset.atlasAssets) {
 					if (aa != null) aa.Clear();
 				}
-				skeletonDataAsset.Clear();
 			}
+			ClearSkeletonDataAsset(skeletonDataAsset);
 			skeletonDataAsset.GetSkeletonData(true);
+			DataReloadHandler.ReloadAnimationReferenceAssets(skeletonDataAsset);
 		}
 
 		public static void ReinitializeComponent (SkeletonRenderer component) {
diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Asset Types/AnimationReferenceAsset.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Asset Types/AnimationReferenceAsset.cs
index 370704331..9564f3bb0 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Asset Types/AnimationReferenceAsset.cs	
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Asset Types/AnimationReferenceAsset.cs	
@@ -48,11 +48,16 @@ namespace Spine.Unity {
 				if (animation == null)
 					Initialize();
 #endif
-
 				return animation;
 			}
 		}
 
+		/// <summary>Clears the cached animation corresponding to a loaded SkeletonData object.
+		/// Use this to force a reload for the next time Animation is called.</summary>
+		public void Clear () {
+			animation = null;
+		}
+
 		public void Initialize () {
 			if (skeletonDataAsset == null) return;
 			SkeletonData skeletonData = skeletonDataAsset.GetSkeletonData(AnimationReferenceAsset.QuietSkeletonData);