nemo-preview-patch.txt

--- mainWindow.js	2016-01-02 19:05:37.556205523 -0500
+++ /usr/share/nemo-preview/js/ui/mainWindow.js	2016-01-02 20:04:04.704105784 -0500
@@ -283,6 +283,8 @@
                 yFactor = 0.92;
         }
 
+        yFactor = 0;
+
         this._texture.set_size(textureSize[0], textureSize[1]);
         this._textureYAlign.factor = yFactor;
 
@@ -357,6 +359,12 @@
                                           align_axis: Clutter.AlignAxis.Y_AXIS });
         this._texture.add_constraint(this._textureYAlign);
 
+        this._textureXAlign =
+            new Clutter.AlignConstraint({ source: this._stage,
+                                          factor: 0,
+                                          align_axis: Clutter.AlignAxis.X_AXIS });
+        this._texture.add_constraint(this._textureXAlign);
+
         this.refreshSize();
         this._mainGroup.add_child(this._texture);
     },