diff --git a/src/js/sw/primitives/menu.js b/src/js/sw/primitives/menu.js
index b939c46..b7cba2f 100644
--- a/src/js/sw/primitives/menu.js
+++ b/src/js/sw/primitives/menu.js
@@ -17,13 +17,20 @@ export function Menu({ items = [], anchor, open, direction = 'down-right', onSel
     const selectableItems = items.filter(i => !i.divider && !i.disabled);
 
     // Position relative to anchor
+    // When the surface uses CSS transform: scale(), getBoundingClientRect()
+    // returns scaled coordinates but position:fixed uses viewport coordinates.
+    // Dividing by the scale factor converts back to true viewport pixels.
     useEffect(() => {
         if (!open || !anchor) return;
-        const rect = typeof anchor.getBoundingClientRect === 'function'
+        const scale = window.sw?.shell?.getScale?.() || 1;
+        const raw = typeof anchor.getBoundingClientRect === 'function'
             ? anchor.getBoundingClientRect()
             : anchor;
-        const vw = window.innerWidth;
-        const vh = window.innerHeight;
+        const rect = scale !== 1
+            ? { top: raw.top / scale, bottom: raw.bottom / scale, left: raw.left / scale, right: raw.right / scale }
+            : raw;
+        const vw = window.innerWidth / scale;
+        const vh = window.innerHeight / scale;
 
         let top, left;
         const [vDir, hDir] = direction.split('-');