diff --git a/userscript/manga-bookmark.user.js b/userscript/manga-bookmark.user.js
index bba6191..5be6f6c 100644
--- a/userscript/manga-bookmark.user.js
+++ b/userscript/manga-bookmark.user.js
@@ -1243,8 +1243,13 @@
       opts
     );
 
-    // A pinch-zoom is two fingers held down, so the slop check is what keeps it
-    // from opening the panel mid-gesture.
+    // A pinch-zoom is two fingers held down, so the slop check is what keeps a
+    // normal-speed one from opening the panel mid-gesture. Verified 2026-07-28:
+    // a pinch that reaches 240px in ~240ms cancels well before the timer. A
+    // deliberately slow pinch that stays inside the slop for the full 500ms
+    // does open the panel — accepted, since an absolute per-finger drift
+    // threshold cannot tell that apart from two fingers resting, which is the
+    // gesture this is for.
     document.addEventListener(
       "touchmove",
       (e) => {