FileTreeComponent horizontal scrolling

I have a FileTreeComponent which is a tab in a fairly narrow TabbedComponent. When I drill down into the tree, the text for the items in the tree gets increasingly crunched, until nothing but the icon is visible. The horizontal scroll bar doesn’t appear until an icon is past the edge of the view, and even then it only scrolls far enough to show the last item’s icon, but not its text. Is there a way to force the FileTreeComponent to always show the item text?