PdfViewer: The selected page is not synchronized with the selected index in the Thumbnail view when a document is opened manually. This issue occurs in the thumbnail example in the demo applicationl. 

Glyphs with specific font added to the document are not rendered. 

Some lines could be missing in the PdfViewer when rendering line geometries.

The attached image shows the issue.

Wrong color of lines due to Matrix Transformations applied to the Drawing.