Changed behavior - a PdfPage that belongs to a PdfFixedDocument cannot be added to another PdFixedDocument as this can lead to subtle bugs in the generated PDF file.
修补程序
Rotate transform in SVG is not handled correctly in some situations.
Some percentage size and positions in SVG are not handled correctly.
WIN - PDFImage objects cannot be drawn on the page when they are created from a 32bit RGB bitmap.
Text extraction fails with exception when encountering invalid Type 0 fonts.