When printing a document with multiple pages, the pages that are not currently visible will be printed without content.

Path geometries with a small thickness value are not displayed correctly 

All annotations are missing because ArgumentNullException is thrown while importing page annotations. The exception is handled and all non-annotation related pdf content is loaded successfully.

The instances are kept in GeometryRenderer cache and each time the content stream is parsed new PathGeometry instances are added to GeometyRenderer store Dictionary field.

Available in R1 2017 Official Release Version.

The fix will be available in our official release Q2 2016.

FixedDocumentPresenter could be TemplateBound to PDFViewer's Background property.

Available in LIB version: 2016.3.1205

This usually results in a single colored rectangle instead of a gradient filled rectangle.

Available in R1 2018 SP2 release version.

 Image is lost on import/export specific documens.

The thinnest line thickness is thinner than in Adobe and it is not scaled according to the scale factor.

Observed:

 

The fix will be available in our official release 2015 Q2. 

NullReferenceException when searching for a bookmark that does not have a destination.

Some glyphs are not rendered correctly - the letter are translated or become unrecognizable.

The fix will be available in our next LIB release (v. 2015.02.0706).

The PdfViewer won't load a document from PdfDocumentSource created from Uri and the ReadOnDemand option.
Here is an example: new PdfDocumentSource(new Uri("webaddress/somefile.pdf"), FormatProviderSettings.ReadOnDemand);

Available in LIB Version 2017.1.130

Decode array for image masks with DeviceGray color space is not respected, and always the default array of [0 1] is used for visualization. When the mask is encoded with [1 0], the mask is applied inversed, making the wrong pixels transparent. This may lead to images becoming invisible.

Fix available in LIB Version 2017.3.1120.

The current implementation relies on the graphic state color to be always SolidColorBrush. However, it may be other color type and InvalidCastException is thrown. This results in missing content.

Available in LIB version 2017.1.410.

When loading a document with no Encoding set and containing MicrosoftNonSymbolicGlyph an exception is thrown and the content is not loaded successfully: System.NullReferenceException: 'Object reference not set to an instance of an object.'

NullReferenceException is thrown when importing a document with AcroForm referencing a missing object for fields collection. This is a regression as the same document will be imported without a problem in previous versions of RadPdfViewer as the AcroForm object would be entirely skipped.

When annotations have annotation flag Print they should be visualized when printing the document. Usually, Widget annotations have such flag and currently RadPdfViewer does not print them at all.

Available in LIB Version 2017.3.918.