diff --git a/dist/Spine-v1.34.1.c3addon b/dist/Spine-v1.34.1.c3addon
new file mode 100644
index 0000000..92534cf
Binary files /dev/null and b/dist/Spine-v1.34.1.c3addon differ
diff --git a/src/addon.json b/src/addon.json
index 2ec2ea1..e9f35ee 100755
--- a/src/addon.json
+++ b/src/addon.json
@@ -3,7 +3,7 @@
   "type": "plugin",
   "name": "Spine",
   "id": "Gritsenko_Spine",
-  "version": "1.34.0",
+  "version": "1.34.1",
   "author": "Mikal and Igor Gritsenko",
   "website": "https://gritsenko.github.io/c3_spine_plugin",
   "documentation": "https://gritsenko.github.io/c3_spine_plugin",
diff --git a/src/c3runtime/instance.js b/src/c3runtime/instance.js
index 1c29580..6666ee2 100644
--- a/src/c3runtime/instance.js
+++ b/src/c3runtime/instance.js
@@ -105,15 +105,15 @@
             // this.assetManager = new spine.SharedAssetManager();
             // this.bgColor = new spine.Color(0.0, 0.0, 0.0, 0.0);
 
-            if (this._sdkType._skeletonData.notInitialized)
+            if (!this._sdkType._skeletonDataInitialized)
             {
+                this._sdkType._skeletonDataInitializing = true;
                 this._sdkType._assetManager = new spine.SharedAssetManager();
                 this._sdkType._assetTag = this.uid;
                 this.assetManager = this._sdkType._assetManager;
-                this._sdkType._skeletonData.initializing = true;
                 const assetTag = this._sdkType._assetTag;
                 
-                if (this.debug) console.log(this.GetInstance().GetUID(),'[Spine] Loading skeleton, textures, json, atlas');
+                if (this.debug) console.info(this.GetInstance().GetUID(),'[Spine] Loading skeleton, textures, json, atlas');
                 // Only load textures once for creation of skeletonData, not for each instance
                 // Disable PMA when loading Spine textures
                 spine.webgl.GLTexture.DISABLE_UNPACK_PREMULTIPLIED_ALPHA_WEBGL = true;
@@ -140,7 +140,6 @@
                 }
 
                 this.assetManager.loadText(assetTag, this.atlasURI);
-                this._sdkType._skeletonData.initializing = false;
             }
             this.isSpineInitialized = true; 
         }
@@ -187,11 +186,10 @@
             const assetTag = this._sdkType._assetTag;
             const self = this;
 
-            if (this.debug) console.log("[Spine] Reading skeleton data:", this.uid, name, animationName);
+            if (this.debug) console.info("[Spine] Reading skeleton data:", this.uid, name, animationName);
             // If skeletonData not initialized, create it and stop other instances from creating it
-            if (this._sdkType._skeletonData.notInitialized)
+            if (!this._sdkType._skeletonDataInitialized)
             {
-                this._sdkType._skeletonData.notInitialized = false;
                 const atlasURI = assetManager.get(assetTag, this.atlasURI);
                 this._sdkType._atlas = new spine.TextureAtlas(atlasURI, function(path) {
                     return assetManager.get(self._sdkType._assetTag, self._sdkType._assetPaths[path]);
@@ -209,6 +207,8 @@
                 {
                     this._sdkType._skeletonData = this._sdkType._skeletonJson.readSkeletonData(assetManager.get(assetTag, this.jsonURI) [name] );
                 }
+                this._sdkType._skeletonDataInitialized = true;
+                this._sdkType._skeletonDataInitializing = false;
             }
 
             var skeleton = new spine.Skeleton(this._sdkType._skeletonData);
@@ -240,7 +240,7 @@
                 }
             };
 
-            // if (this.debug) console.log('[Spine] track:', state.tracks[0]);
+            // if (this.debug) console.info('[Spine] track:', state.tracks[0]);
 
             state.apply(skeleton);
             skeleton.updateWorldTransform();
@@ -417,7 +417,7 @@
             }
 
             if (!this.isSpineInitialized) {
-                if (!this.initSpineInProgress && !this._sdkType._skeletonData.initializing)
+                if (!this.initSpineInProgress && !this._sdkType._skeletonDataInitializing)
                     {
                         this.initSpine();
                     }
@@ -497,7 +497,7 @@
             let layerRect = wi.GetLayer().GetViewport();
             let instanceRect = wi.GetBoundingBox();
             let onScreen = instanceRect.intersectsRect(layerRect);
-            // console.log('[Spine] onscreen, rects', onScreen, layerRect, instanceRect);
+            // console.info('[Spine] onscreen, rects', onScreen, layerRect, instanceRect);
             spineBatcher.setInstanceOnScreen(onScreen, this.uid);
 
             
@@ -575,7 +575,7 @@
                 let options =  { mipMap: false, sampling: sampling }
                 if (this.debug)
                 {
-                    console.log('[Spine] CreateDynamicTexture x,y:', Math.round(this.textureWidth), Math.round(this.textureHeight), this.uid, this.runtime.GetTickCount());
+                    console.info('[Spine] CreateDynamicTexture x,y:', Math.round(this.textureWidth), Math.round(this.textureHeight), this.uid, this.runtime.GetTickCount());
                 }
                 this._elementTexture = renderer.CreateDynamicTexture(this.textureWidth, this.textureHeight, options);
 
diff --git a/src/c3runtime/spine-bone-control.js b/src/c3runtime/spine-bone-control.js
index 8a5a567..5a50502 100644
--- a/src/c3runtime/spine-bone-control.js
+++ b/src/c3runtime/spine-bone-control.js
@@ -30,11 +30,20 @@ class SpineBoneControl {
         const bones = this.bones;
         for(let boneName in bones)
         {
-            let bone = skeleton.findBone(boneName);
-            if (!bone) {console.warn('[Spine] applyBoneControl bone not found', boneName);continue;}
+            if(!bones[boneName].hasOwnProperty('__boneControlReference'))
+            {
+                let boneControlReference = skeleton.findBone(boneName);
+                if (!boneControlReference) {console.warn('[Spine] applyBoneControl bone not found', boneName);continue;}
+                // Cache reference
+                bones[boneName].__boneControlReference = boneControlReference;
+            }
+
             for(const property in bones[boneName])
             {
-                bone[property] = bones[boneName][property];
+                // Ignore reference to bone
+                if (property == '__boneControlReference') continue;
+
+                bones[boneName].__boneControlReference[property] = bones[boneName][property];
             }
         }
     }
diff --git a/src/c3runtime/spine-draw.js b/src/c3runtime/spine-draw.js
index 0dabe94..5689cfe 100644
--- a/src/c3runtime/spine-draw.js
+++ b/src/c3runtime/spine-draw.js
@@ -305,6 +305,6 @@ class SpineBatch {
 
 if (!globalThis.spineBatcher)
 {
-    console.log('[Spine] SpineBatcher init, 1.34.0');
+    console.log('[Spine] SpineBatcher init, 1.34.1');
     globalThis.spineBatcher = new SpineBatch();
 }
\ No newline at end of file
diff --git a/src/c3runtime/type.js b/src/c3runtime/type.js
index 39c839a..5e71762 100644
--- a/src/c3runtime/type.js
+++ b/src/c3runtime/type.js
@@ -17,7 +17,8 @@
         OnCreate()
         {
             this.GetImageInfo().LoadAsset(this._runtime);
-            this._skeletonData = {notInitialized : true, initializing : false}
+            this._skeletonDataInitialized = false;
+            this._skeletonDataInitializing = false;
             this._skeletonJson = null;
             // Tag for asset manager for skeletonData assets.
             this._assetTag = null;
diff --git a/src/plugin.js b/src/plugin.js
index 4227c23..ba0dc85 100755
--- a/src/plugin.js
+++ b/src/plugin.js
@@ -3,7 +3,7 @@
     const C3 = self.C3;
     
     const PLUGIN_ID = "Gritsenko_Spine";
-    const PLUGIN_VERSION = "1.34.0";
+    const PLUGIN_VERSION = "1.34.1";
     const PLUGIN_CATEGORY = "general";
 
     const PLUGIN_CLASS = SDK.Plugins.Gritsenko_Spine = class SpinePlugin extends SDK.IPluginBase {