From 0282209b85905064e4fb2fabc158d3312c3d4ad8 Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Mon, 26 Apr 2021 18:27:01 +0200
Subject: [PATCH] wait #4411 @1

---
 js/libs/fluidbook/fluidbook.bookmarks.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/js/libs/fluidbook/fluidbook.bookmarks.js b/js/libs/fluidbook/fluidbook.bookmarks.js
index 9ddd828b..8599e318 100644
--- a/js/libs/fluidbook/fluidbook.bookmarks.js
+++ b/js/libs/fluidbook/fluidbook.bookmarks.js
@@ -368,6 +368,9 @@ FluidbookBookmarks.prototype = {
         return this.areBookmarksAllowedOn(page) && this.bookmarks.indexOf(page) > -1;
     },
     areBookmarksAllowedOn: function (pageNr) {
+        if (pageNr === 0 || pageNr > this.fluidbook.settings.pages) {
+            return false;
+        }
         return this.fluidbook.settings.bookmarkDisablePages.indexOf(pageNr) === -1;
     },
     getBookmarkForPage: function (pageNr, allwaysAtRight, permanentIcon) {
-- 
2.39.5