圆点边框将属性传递给单独的线条

Question

环境：
iText 7.1.0
Java JDK-9.0.1

问题：
表的圆角点边框的线宽和线形属性将传递到同一页面上的单独行。其他边界类型没有表现出这种行为。

代码示例：

public class ITextTest
{
    public static void main(String[] args)
    {
        try(PdfWriter writer = new PdfWriter("D:\\test.pdf"))
        {
            try(PdfDocument pdfDocument = new PdfDocument(writer)) 
            {
                pdfDocument.setDefaultPageSize(PageSize.A5);
                pdfDocument.addEventHandler(PdfDocumentEvent.END_PAGE, new FooterEventHandler());
                try(Document doc = new Document(pdfDocument))
                {
                    for(int i=0;i < 38; i++)
                        doc.add(new Paragraph("test test test test test test test test test test test test test test test")
                                .addStyle(new Style().setTextAlignment(TextAlignment.JUSTIFIED)));

                    Table pdfTable = new Table(2);
                    pdfTable.setAutoLayout();
                    pdfTable.setHorizontalAlignment(HorizontalAlignment.CENTER);
                    pdfTable.setBorder(new RoundDotsBorder(new DeviceRgb(255, 0, 0), 3f, 1f));
                    pdfTable.addCell(new Cell().add(new Paragraph("hello")).setBorder(new RoundDotsBorder(new DeviceRgb(255, 0, 0), 3f, 1f)));
                    pdfTable.addCell(new Cell().add(new Paragraph("hello")).setBorder(new RoundDotsBorder(new DeviceRgb(255, 0, 0), 3f, 1f)));
                    pdfTable.addCell(new Cell().add(new Paragraph("hello")).setBorder(new RoundDotsBorder(new DeviceRgb(255, 0, 0), 3f, 1f)));
                    pdfTable.addCell(new Cell().add(new Paragraph("hello")).setBorder(new RoundDotsBorder(new DeviceRgb(255, 0, 0), 3f, 1f)));
                    doc.add(pdfTable);

                    for(int i=0;i < 18; i++)
                        doc.add(new Paragraph("test test test test test test test test test test test test test test test")
                                .addStyle(new Style().setTextAlignment(TextAlignment.JUSTIFIED)));
                }
            }
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
    }

    private static class FooterEventHandler implements IEventHandler
    {
        @Override
        public void handleEvent(Event event)
        {
            PdfDocumentEvent docEvent = (PdfDocumentEvent)event;
            PdfPage page = docEvent.getPage();
            Rectangle pageSize = page.getPageSize();
            PdfCanvas pdfCanvas = new PdfCanvas(page);
            try(Canvas canvas = new Canvas(pdfCanvas, docEvent.getDocument(), pageSize))
            {
                canvas.setFontColor(DeviceRgb.BLACK);
                float x = (pageSize.getLeft() + pageSize.getRight()) / 2;
                float y = pageSize.getBottom() + 10;
                canvas.showTextAligned("Page " + String.valueOf(docEvent.getDocument().getPageNumber(page)), x, y, TextAlignment.CENTER);
                pdfCanvas.setStrokeColor(new DeviceRgb(java.awt.Color.BLACK));
                pdfCanvas.moveTo(pageSize.getLeft()  + 10, pageSize.getBottom() + 30);
                pdfCanvas.lineTo(pageSize.getRight() - 10, pageSize.getBottom() + 30);
                pdfCanvas.closePathStroke();
            }
        }
    }
}