Dialog for inputting the password should be implemented in order to be able to decrypt the file content.

The fix will be available in next LIB release (v. 2015.1.0323).

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).

Import documents that use this type of encryption. Currently, a handled NotSupportedEncryptionException is thrown while importing such a document and it cannot be opened in RadPdfViewer.

Available in R1 2018 Official Release version.

Vertical lines with small length and big thickness are drawn as short horizontal lines with big StrokeThickess. This results in rendering them as big squares, which can hide parts of the content.

Implement import of documents containing Type 3 fonts.

The fix will be available in our official release Q1 2016.

The fix will be available in our latest LIB release (v. 2015.1.0323).

The fix will be available in Q3 SP.

When this feature is implemented it should visualize the bookmarks similarly to in the attached screenshot.

Available in R3 2018 Official Release Version.

Loading a document that contains big images could lead to OutOfMemory exception.

When an image is actually consisting of sequence of smaller images, sometimes white lines appear between the smaller images.

When the pdfviewer is used inside backstagemenu then the pdf file content is not displayed.

We have a good news for all of you who have experienced problems with the memory consumption of RadPdfViewer. We have made significant optimization of what is cached for each page when scrolling in a document.
Please have in mind that when using big images in a document the optimization may seem not so significant. This is because there is additional opportunity to further optimization of the caching mechanism for the image sources.
I have logged this additional opportunity as a different feature request. Here is a link if you would like to subscribe for status updates of that item to: Optimize the image source cache - http://feedback.telerik.com/Project/143/Feedback/Details/189305-optimize-the-image-source-cache

Please implement Crypt Filter for PDFs to open RC4 (40Bit, 128Bit) and AES (128Bit,256Bit) pdf Files inside PDFViewer.