From 7f99962fb03356afae144b7f187a5ce475624604 Mon Sep 17 00:00:00 2001
From: "(quasar) nebula" <qznebula@protonmail.com>
Date: Sun, 19 Jul 2026 19:32:32 -0300
Subject: client: sticky-heading: skip invisible headings

---
 src/static/js/client/sticky-heading.js | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/static/js/client')

diff --git a/src/static/js/client/sticky-heading.js b/src/static/js/client/sticky-heading.js
index c69e137f..5381a8b7 100644
--- a/src/static/js/client/sticky-heading.js
+++ b/src/static/js/client/sticky-heading.js
@@ -258,6 +258,9 @@ function getContentHeadingClosestToStickySubheading(index) {
       continue;
     }
 
+    if (heading.checkVisibility?.() === false) continue;
+    if (heading.offsetParent === null) continue;
+
     const headingRect = heading.getBoundingClientRect();
     if (headingRect.y + headingRect.height / 1.5 < stickyBottom + 40) {
       return heading;
-- 
cgit 1.3.0-6-gf8a5