Unfortunately, this is a bug in the editor component we use. We'll do our best to resolve the issue in some of our feature releases.
In the meanwhile, can you try to zoom-in/out the browser view (Ctrl + scroll down/up) by 10% percent. Is the issue still reproducible? Was your browser zoom factor 100% when you shot the movie? What is your screen resolution and DPI?
Ivan K. Ivanov
the Telerik team
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