diff -r 22bc48b746d4 javafx-ui-controls/src/com/sun/javafx/scene/control/skin/TableHeaderRow.java
--- a/javafx-ui-controls/src/com/sun/javafx/scene/control/skin/TableHeaderRow.java	Thu Mar 07 12:03:41 2013 +1300
+++ b/javafx-ui-controls/src/com/sun/javafx/scene/control/skin/TableHeaderRow.java	Wed Mar 06 16:02:05 2013 -0800
@@ -91,9 +91,9 @@
     public double getTableWidth() { return tableWidth; }
     private void updateTableWidth() {
         // snapping added for RT-19428
-        double padding = snapSpace(getTablePadding().getLeft()) + snapSpace(getTablePadding().getRight());
+        double padding = snapSize(getTablePadding().getLeft()) + snapSize(getTablePadding().getRight());
         this.tableWidth = snapSize(tableSkin.getSkinnable().getWidth()) - padding;
-        clip.setWidth(tableWidth + 1);
+        clip.setWidth(tableWidth);
     }
 
     private Rectangle clip;