modules/controls/src/main/java/javafx/scene/control/skin/NestedTableColumnHeader.java

*** 295,309 ****
          int pos = 0;
          for (int i = 0, max = getColumnHeaders().size(); i < max; i++) {
              TableColumnHeader n = getColumnHeaders().get(i);
              if (! n.isVisible()) continue;
  
!             double prefWidth = snapSize(n.prefWidth(-1));
  //            double prefHeight = n.prefHeight(-1);
  
              // position the column header in the default location...
!             n.resize(prefWidth, snapSize(h - labelHeight));
              n.relocate(x, labelHeight + snappedTopInset());
  
  //            // ...but, if there are no children of this column, we should ensure
  //            // that it is resized vertically such that it goes to the very
  //            // bottom of the table header row.
--- 295,309 ----
          int pos = 0;
          for (int i = 0, max = getColumnHeaders().size(); i < max; i++) {
              TableColumnHeader n = getColumnHeaders().get(i);
              if (! n.isVisible()) continue;
  
!             double prefWidth = snapSizeX(n.prefWidth(-1));
  //            double prefHeight = n.prefHeight(-1);
  
              // position the column header in the default location...
!             n.resize(prefWidth, snapSizeY(h - labelHeight));
              n.relocate(x, labelHeight + snappedTopInset());
  
  //            // ...but, if there are no children of this column, we should ensure
  //            // that it is resized vertically such that it goes to the very
  //            // bottom of the table header row.
*** 333,343 ****
          double width = 0.0F;
  
          if (getColumns() != null) {
              for (TableColumnHeader c : getColumnHeaders()) {
                  if (c.isVisible()) {
!                     width += snapSize(c.computePrefWidth(height));
                  }
              }
          }
  
          return width;
--- 333,343 ----
          double width = 0.0F;
  
          if (getColumns() != null) {
              for (TableColumnHeader c : getColumnHeaders()) {
                  if (c.isVisible()) {
!                     width += snapSizeX(c.computePrefWidth(height));
                  }
              }
          }
  
          return width;