The behavior shown in the video is by design and is an expected behavior to not load link information when the selection contains not only a link but some addition text like the :
symbols. In your video you select "tons of feature" along with : symbol as well as sometext with a. You
I tested our main competitors' editors and verified that same behavior in their link managers.
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed