RadioSets are not scrollable #5100
Description
All of the "similar" widgets (those which involve moving a cursor through a collection of options) scroll when you move the cursor through the children (SelectionList, OptionList, Tree, DataTable, and so on).
It seems like a RadioSet is not scrollable at all though. If you set a fixed height on it, you can move the cursor completely out of view, with no way of scrolling to make it visible.