From a56ce6d47cdbac6af6e732fd73e9244d6936c8ca Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Thu, 14 May 2020 11:35:46 +0200
Subject: [PATCH] fix #3642 @0.5

---
 js/libs/fluidbook/fluidbook.tabs.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/js/libs/fluidbook/fluidbook.tabs.js b/js/libs/fluidbook/fluidbook.tabs.js
index ff346aea..6323a601 100644
--- a/js/libs/fluidbook/fluidbook.tabs.js
+++ b/js/libs/fluidbook/fluidbook.tabs.js
@@ -112,9 +112,18 @@ FluidbookTabs.prototype = {
         if (this.hasSections()) {
             $.each(this.sections, function (id, limit) {
                 var sectionPages = [];
+                var foundOnePage = false;
                 $.each(pages, function (k, p) {
-                    if ($this.getSectionByPageNumber(p) - 1 === id) {
+                    if (p === '-' && foundOnePage) {
                         sectionPages.push(p);
+                    } else {
+                        if ($this.getSectionByPageNumber(p) - 1 === id) {
+                            foundOnePage = true;
+                            sectionPages.push(p);
+                        } else if (foundOnePage) {
+                            // Assume that if this page is not in the current section, next ones won't be either
+                            return false;
+                        }
                     }
                 });
                 sections.push(sectionPages);
-- 
2.39.5