Thank you for the provided details.
I will ask you for more information that will help us reproduce this. For example:
• Try your application on another machine where the brand, model, and drivers of the video are different from the one on the problematic machine. What is the result?
• Do you see these problems on several machines or just one? If one, what is the software and PC/video card configuration?
• Are you using remote desktop? If yes, what are the connection settings? Also, what other services (software programs) are running on the host and remote machines?
Also could you provide a screenshot of the issue.
I am looking forward to your reply.
the Telerik team