Loading document containing link with no destination leads to ArgumentNullException in PdfElementToFixedElementTranslator.CreateDestination method.

This exception is observed only on a 32-bit platform (not on 64-bit).

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.

Importing a document, which contains pages with many geometries - such as paths, lines, and curves leads to degraded scrolling performance.

RadPdfViewer does not read image resources defined in Form XObject elements.

Some files when opened with PdfViewer will throw a KeyNotFoundException which will be handled. Parts of the text in the file might or might not be missing.

After saving a document from PdfViewer, it cannot be opened by other applications as it is still locked.

Using Adobe the edit mode is triggered on the first mouse click.

When rendering a PDF document page in FixedDocumentSinglePagePresenter, blank pages are displayed, when the document contains images.

When creating thumbnails from RadFixedPage with images, the page images are missing from the resultant thumbnail.

CreateThumbnail of ThumbnailFactory leads to InvalidOperationException: 'The calling thread cannot access this object because a different thread owns it.', when called from separate STA thread.

User is not able to type in the form fields on touch devices.

The exception is thrown during "Put" operator execution.

Telerik.Windows.Zip.InvalidDataException for unknown (0xAD) compression method is thrown for some object streams.

Visualizing a page with a huge number of images (40000) freezes the application.
When switching to the FixedDocumentSinglePageViewPresenter, all the page content should be loaded so it can be later rendered. Although the images are loaded asynchronously, there are too many threads started which seems to cause the hang. Also, according to profiling results, it seems like the image caching causes performance diminishments in such scenarios. 

When importing the document as DocumentSource the stream will be loaded asynchronously and the document won't be loaded when the Print() method is called, NullReferenceException is thrown.

Use the attached project to reproduce. 

Workaround:

var combo = toolbar.ChildrenOfType<PercentComboBox>().FirstOrDefault();

var binding = new System.Windows.Data.Binding();
binding.Path = new System.Windows.PropertyPath("ScaleFactor");
binding.Mode = System.Windows.Data.BindingMode.TwoWay;
binding.Source = pdfViewer;
binding.UpdateSourceTrigger = System.Windows.Data.UpdateSourceTrigger.PropertyChanged;
BindingOperations.SetBinding(combo, PercentComboBox.ValueProperty, binding);

var binding1 = new System.Windows.Data.Binding();
binding1.Source = pdfViewer;
BindingOperations.SetBinding(combo, PercentComboBox.RadPdfViewerProperty, binding);

To reproduce:

- Search for a specific word until the last occurrence is found and a message appears. 

- Click the FindPrevious button

Result: A message appears.

Expected: The previous entry is selected. 

Whitespaces are ignored when copy-pasting from PdfViewer to another text redactor.

Document with invalid cross-reference stream is not loaded correctly