UI: Add overscroll to sidebar viewports

.changeset/curvy-ties-matter.md

@@ -0,0 +1,5 @@
+---
+'fumadocs-ui': patch
+---
+
+Add `overscroll` to sidebar viewports

packages/ui/src/components/layout/sidebar.tsx

@@ -241,7 +241,7 @@ export function SidebarViewport(props: ScrollAreaProps) {
   return (
     <ScrollArea {...props} className={cn('h-full', props.className)}>
       <ScrollViewport
-        className="p-4"
+        className="p-4 overscroll-contain"
         style={
           {
             '--sidebar-item-offset': 'calc(var(--spacing) * 2)',