Issue Report: Logo Not Rendering Consistently in RadPdfView

[Ankit]

Issue Summary:

When previewing PDF documents using RadPdfView (Telerik UI for WPF), the logo positioned at the top-left corner of the page fails to render consistently across machines. While the rest of the document displays correctly, the logo either appears distorted or is missing entirely.

Environment:

• Control Used: RadPdfView (Telerik UI for WPF)
• Telerik Libraries:
  • Telerik.Windows.Documents.dll – Version 2023.1.315.45
  • Telerik.Windows.Documents.Core.dll – Version 2023.1.307.40
• Operating Systems Tested:
  • Windows 10 Pro: Logo appears stretched and centered
  • Windows 11 Pro (Version 25H2, OS Build 26200.6899): Logo is missing

Symptoms:

• The logo, embedded in the PDF and originally positioned at the top-left corner, does not render correctly in RadPdfView.
• The issue is isolated to RadPdfView; the same PDF displays the logo correctly in WebView2 and standard web browsers.

Troubleshooting Steps Taken:

• Verified that the logo is present when viewed in other PDF viewers.
• Tested across multiple machines using identical code and PDF files.

Temporary Workaround:
Using <wv2:WebView2> to preview the PDF resolves the issue, indicating that the problem is specific to RadPdfView’s rendering engine.

Request:
Please confirm whether this is a known issue with the specified Telerik versions and advise if a fix or recommended workaround is available to ensure consistent logo rendering in RadPdfView across platforms.

Note: Using .NET version 4.8

[Dess | Tech Support Engineer, Principal]

Hello, Ankit,

I am sorry to hear that you are facing any difficulties with the PdfViewer control of the UI for WPF suite. RadPdfView relies on the Telerik Document Processing engine. Based on the provided information, we can't conclude whether the issue occurs in the internal PDF engine or the UI rendering of the PdfViewer control. 

It is hard for us to investigate the issue without actually having the problematic file. Please try and prepare a sample file without the sensitive information. If you decide you can submit a private support ticket from your Telerik account and send us the original file. You can be certain that the shared information in the private ticket will be used only for investigation purposes of this case and your privacy will be respected.  

Thank you in advance for your cooperation. Looking forward to your reply. 

Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik