Arc Rotate map panning fix

src/Cameras/babylon.arcRotateCamera.js

@@ -42,7 +42,7 @@ var BABYLON;
             this._keys = [];
             this._viewMatrix = new BABYLON.Matrix();
             // Panning
-            this.panningAxis = new BABYLON.Vector3(1, 0, 1);
+            this.panningAxis = new BABYLON.Vector3(1, 1, 0);
             this._isRightClick = false;
             this._isCtrlPushed = false;
             this.checkCollisions = false;
@@ -408,6 +408,10 @@ var BABYLON;
                 this._localDirection.multiplyInPlace(this.panningAxis);
                 this._viewMatrix.invertToRef(this._cameraTransformMatrix);
                 BABYLON.Vector3.TransformNormalToRef(this._localDirection, this._cameraTransformMatrix, this._transformedDirection);
+                //Eliminate y if map panning is enabled (panningAxis == 1,0,1)
+                if (!this.panningAxis.y) {
+                    this._transformedDirection.y = 0;
+                }
                 this.target.addInPlace(this._transformedDirection);
             }
             // Limits

src/Cameras/babylon.arcRotateCamera.ts

@@ -443,6 +443,10 @@
                 this._localDirection.multiplyInPlace(this.panningAxis);
                 this._viewMatrix.invertToRef(this._cameraTransformMatrix);
                 Vector3.TransformNormalToRef(this._localDirection, this._cameraTransformMatrix, this._transformedDirection);
+                //Eliminate y if map panning is enabled (panningAxis == 1,0,1)
+                if (!this.panningAxis.y) {
+					this._transformedDirection.y = 0;
+				}
                 this.target.addInPlace(this._transformedDirection);
             }