From c392095ef2208068274b276bfae875254f817a3a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 25 Aug 2023 08:46:36 +0530
Subject: [PATCH] E-book viewer: Fix scrolling to Table of Contents items that
 are within a single internal file not activating the back button. Fixes
 #2032974 [E-book viewer: Back and Forward buttons don't seem to work with
 *.fb2 ebooks](https://bugs.launchpad.net/calibre/+bug/2032974)

---
 src/pyj/read_book/iframe.pyj | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pyj/read_book/iframe.pyj b/src/pyj/read_book/iframe.pyj
index 5c06a3db58..30c574ac84 100644
--- a/src/pyj/read_book/iframe.pyj
+++ b/src/pyj/read_book/iframe.pyj
@@ -355,6 +355,7 @@ class IframeBoss:
     def on_scroll_to_anchor(self, data):
         frag = data.frag
         if frag:
+            self.replace_history_on_next_cfi_update = False
             self.scroll_to_anchor(frag)
         else:
             self.to_scroll_fraction(0.0, False)