diff --git a/chrome.html b/chrome.html
index 4708acf..8bfdab9 100644
--- a/chrome.html
+++ b/chrome.html
@@ -885,6 +885,11 @@
   });
 
   syncHeight();
+  // Self-heal: some menu-close paths (drag interruptions, focus flips) can
+  // leave the chrome view taller than the natural body-scrollHeight. Every
+  // 750 ms with no menu open, re-sync — main.js only re-layouts when the
+  // value actually changes, so this is a cheap no-op in the steady state.
+  setInterval(() => { if (!document.querySelector(".ctxmenu, .grouppop")) syncHeight(); }, 750);
 </script>
 </body>
 </html>