Setting the z-index
of the dragged RadTagCloud item will ensure only that it will be displayed above the others. The RadTagCloud has a CSS property overflow: hidden;
applied by default, which hides the overflowing content, including the items. You can override this rule by placing the following code snippet in the head section of your page:
Keep in mind that this is a customization of the RadTagCloud and as such it is not supported, because it could lead to an unexpected behavior is some scenarios. Also, the tag cloud control is not designed to include dragging functionality, so it is possible that you encounter difficulties after applying such modifications.
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