diff --git a/src/theme/book.js b/src/theme/book.js
index 263e8ad05b..7ff71d504c 100644
--- a/src/theme/book.js
+++ b/src/theme/book.js
@@ -521,10 +521,12 @@ function playpen_text(playpen) {
     }, { passive: true });
 
     // Scroll sidebar to current active section
-    var activeSection = sidebar.querySelector(".active");
-    if (activeSection) {
-        sidebarScrollBox.scrollTop = activeSection.offsetTop;
-    }
+    window.addEventListener('load', function() {
+        var activeSection = sidebar.querySelector(".active");
+        if (activeSection) {
+            activeSection.scrollIntoViewIfNeeded();
+        }
+    });
 })();
 
 (function chapterNavigation() {