Merge pull request #3456 from BabylonJS/master

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src/Mesh/babylon.transformNode.ts

@@ -119,7 +119,7 @@ module BABYLON {
          */
         protected _getWorldMatrixDeterminant(): number {
             if (this._currentRenderId !== this.getScene().getRenderId()) {
-                this._worldMatrixDeterminant = this.computeWorldMatrix().determinant();
+                this.computeWorldMatrix();
             }
             return this._worldMatrixDeterminant;
         }
@@ -835,6 +835,9 @@ module BABYLON {
                 this._poseMatrix = Matrix.Invert(this._worldMatrix);
             }
 
+            // Cache the determinant
+            this._worldMatrixDeterminant = this._worldMatrix.determinant();
+
             return this._worldMatrix;
         }