When the Font of the form changes (or the DPI setting), RadForm should be able to arrange its content so that no controls are overlapped. In addition, RadForm should increase its size when necessary.
We are introducing built-in HDPI support in the UI for WinForms suite with our latest release - R2 2017. More information can be found in our blog post - Built-in High DPI Support Coming to Telerik UI for WinForms ( http://www.telerik.com/blogs/built-in-high-dpi-support-coming-to-telerik-ui-for-winforms ).