I am trying to evaluate WPF RadDocking control. I am in the process of replacing ActiPro docking window control with Telerik docking control in our WPF application. However, I ran into an issue with Telerik’s docking control. As shown in the picture in the attached file there is a gap between Pane 2 and Pane 5. I would like to be able to pin all the panes. It looks like the gap can be decreased only if one of the panes becomes a tabbed document. Could you please advise on how to get rid of the gap without making it be a document?