diff --git a/src/SVGSkin.js b/src/SVGSkin.js
index 90e3908..9c10e61 100644
--- a/src/SVGSkin.js
+++ b/src/SVGSkin.js
@@ -30,6 +30,24 @@ class SVGSkin extends Skin {
 
         /** @type {Number} */
         this._maxTextureScale = 0;
+
+        /**
+         * The natural size, in Scratch units, of this skin.
+         * @type {Array<number>}
+         */
+        this.size = [0, 0];
+
+        /**
+         * The viewbox offset of the svg.
+         * @type {Array<number>}
+         */
+        this._viewOffset = [0, 0];
+
+        /**
+         * The rotation center before offset by _viewOffset.
+         * @type {Array<number>}
+         */
+        this._rawRotationCenter = [NaN, NaN];
     }
 
     /**
@@ -43,21 +61,17 @@ class SVGSkin extends Skin {
         super.dispose();
     }
 
-    /**
-     * @return {Array<number>} the natural size, in Scratch units, of this skin.
-     */
-    get size () {
-        return this._svgRenderer.size;
-    }
-
     /**
      * Set the origin, in object space, about which this Skin should rotate.
      * @param {number} x - The x coordinate of the new rotation center.
      * @param {number} y - The y coordinate of the new rotation center.
      */
     setRotationCenter (x, y) {
-        const viewOffset = this._svgRenderer.viewOffset;
-        super.setRotationCenter(x - viewOffset[0], y - viewOffset[1]);
+        if (x !== this._rawRotationCenter[0] || y !== this._rawRotationCenter[1]) {
+            this._rawRotationCenter[0] = x;
+            this._rawRotationCenter[1] = y;
+            super.setRotationCenter(x - this._viewOffset[0], y - this._viewOffset[1]);
+        }
     }
 
     /**
@@ -134,7 +148,11 @@ class SVGSkin extends Skin {
             }
 
             if (typeof rotationCenter === 'undefined') rotationCenter = this.calculateRotationCenter();
-            this.setRotationCenter.apply(this, rotationCenter);
+            this.size = this._svgRenderer.size;
+            this._viewOffset = this._svgRenderer.viewOffset;
+            // Reset rawRotationCenter when we update viewOffset.
+            this._rawRotationCenter = [NaN, NaN];
+            this.setRotationCenter(rotationCenter[0], rotationCenter[1]);
             this.emit(Skin.Events.WasAltered);
         });
     }