Hello Rudolf Bösch,
Yes, our latest release has introduced the
RestrictedAreaMargin which is of type Thickness that controls the size occupied by the control. To turn on and off this feature you will need the
IsRestricted property that enables and disabled the
RestrictedAreaMargin. We are about to create a blog post discussing the new feature. If you have any other questions don't hesitate to contact us.
Sincerely yours,
Hristo Borisov
the Telerik team