Bug in Zooming

When doing the control/zoom on a chart, the result of the zoom differs depending on whether you zoom from bottom right to top left or vice/versa. Tracing through the code to TChartPane.DoZoomIn procedure, there appears to be an error in one of the else if statements (cut and paste error?).

if (CtrlZooming = czYAxis) or (CtrlZooming = czBoth) then
    begin
      if (FRy - FCy) > 0 then
      begin
        Series.ForceInit(true);
        Series.Mode := cmScaling;
        for I := 0 to Series.Count - 1 do
        begin
          Series.AutoRange := arDisabled;
          pmin := Series.YToValue(FRy, FSeriesRect);
          pmax := Series.YToValue(FCy, FSeriesRect);
          if pmax - pmin > ZOOMMIN then
          begin
            TCrackedChartSerie(Series).MinimumValue := pmin;
            TCrackedChartSerie(Series).MaximumValue := pmax;
          end;
        end;
        Chart.InitializeChart(ChartView.Canvas, FRect, 1, 1);
      end
      else if (FRy - FCy) > 0 then                    <= this branch will never get called!!
      begin
        Series.ForceInit(true);
        Series.Mode := cmScaling;
        for I := 0 to Series.Count - 1 do
        begin
          Series.AutoRange := arDisabled;
          pmin := Series.YToValue(FCy, FSeriesRect);
          pmax := Series.YToValue(FRy, FSeriesRect);
          if pmax - pmin > ZOOMMIN then
          begin
            TCrackedChartSerie(Series).MinimumValue := pmin;
            TCrackedChartSerie(Series).MaximumValue := pmax;
          end;
        end;
        Chart.InitializeChart(ChartView.Canvas, FRect, 1, 1);
      end;
    end;