Thank you for the interest in RadPdfViewer.
You can try to open your document in our online demo
and see if the problem still exists. If yes, we will appreciate if you are able to send this document in order to investigate the issue and fix it.
Check out Telerik Analytics, the service which allows developers to discover app usage patterns, analyze user data, log exceptions, solve problems and profile application performance at run time. Watch the videos
and start improving your app based on facts, not hunches.