From 634ea59a259c8d3e4dc164528f984758eebd8883 Mon Sep 17 00:00:00 2001
From: Heinrich Fenkart <hnrch02@gmail.com>
Date: Fri, 13 Jun 2014 14:06:55 +0200
Subject: [PATCH] Allow tabs to fade in if no initially active pane is present;
 fixes #13814

---
 js/tab.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/tab.js b/js/tab.js
index 8e922ddcbf..c46f5182bc 100644
--- a/js/tab.js
+++ b/js/tab.js
@@ -55,7 +55,7 @@
     var $active    = container.find('> .active')
     var transition = callback
       && $.support.transition
-      && $active.hasClass('fade')
+      && (($active.length && $active.hasClass('fade')) || !!container.find('> .fade').length)
 
     function next() {
       $active
@@ -79,7 +79,7 @@
       callback && callback()
     }
 
-    transition ?
+    $active.length && transition ?
       $active
         .one('bsTransitionEnd', next)
         .emulateTransitionEnd(150) :
-- 
2.47.2