diff --git a/class/init.php b/class/init.php
index 35ca2d5..b08f45c 100644
--- a/class/init.php
+++ b/class/init.php
@@ -122,29 +122,29 @@ class MCI_Footnotes {
         // add the jQuery plugin registered by WordPress
         wp_enqueue_script( 'jquery' );
 
-        // Add jQuery Tools:
-        wp_enqueue_script('mci-footnotes-js-jquery-tools', plugins_url('../js/jquery.tools.min.js', __FILE__));
-
-        // Add the jQuery UI libraries registered by WordPress:
-        // 'no need to enqueue -core, because dependencies are set'
-        // Source: <https://wordpress.stackexchange.com/questions/273986/correct-way-to-enqueue-jquery-ui>
-        wp_enqueue_script( 'jquery-ui-widget' );
-        wp_enqueue_script( 'jquery-ui-mouse' );
-        wp_enqueue_script( 'jquery-ui-accordion' );
-        wp_enqueue_script( 'jquery-ui-autocomplete' );
-        wp_enqueue_script( 'jquery-ui-slider' );
+//        // Add jQuery Tools:
+//        wp_enqueue_script('mci-footnotes-js-jquery-tools', plugins_url('../js/jquery.tools.min.js', __FILE__));
+//
+//        // Add the jQuery UI libraries registered by WordPress:
+//        // 'no need to enqueue -core, because dependencies are set'
+//        // Source: <https://wordpress.stackexchange.com/questions/273986/correct-way-to-enqueue-jquery-ui>
+//        wp_enqueue_script( 'jquery-ui-widget' );
+//        wp_enqueue_script( 'jquery-ui-mouse' );
+//        wp_enqueue_script( 'jquery-ui-accordion' );
+//        wp_enqueue_script( 'jquery-ui-autocomplete' );
+//        wp_enqueue_script( 'jquery-ui-slider' );
 
 
         // Should that not work, fetch jQuery UI from cdnjs.cloudflare.com:
         // Add jQuery UI following @vonpiernik:
         // <https://wordpress.org/support/topic/tooltip-hover-not-showing/#post-13456762>:
         // This was enabled in Footnotes v2.0.0 through v2.0.3.
-        // Re-added for 2.0.9d1 to look whether it can fix a broken tooltip display.   2020-11-07T1601+0100
-        //wp_register_script( 'jQueryUI', 'https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js', null, null, true );
-        //wp_enqueue_script( 'jQueryUI' );
+        // Re-added for 2.0.9d1 / 2.1.1d0 to look whether it can fix a broken tooltip display.   2020-11-07T1601+0100/2020-11-08T2246+0100
+        wp_register_script( 'jQueryUI', 'https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js', null, null, true );
+        wp_enqueue_script( 'jQueryUI' );
 
-        // Add jQuery Tools and finish adding jQueryUI:   2020-11-08T1638+0100
-        //wp_enqueue_script('mci-footnotes-js-jquery-tools', plugins_url('../js/jquery.tools.min.js', __FILE__), ['jQueryUI']);
+        // Add jQuery Tools and finish adding jQueryUI:   2020-11-08T1638+0100/2020-11-08T2246+0100
+        wp_enqueue_script('mci-footnotes-js-jquery-tools', plugins_url('../js/jquery.tools.min.js', __FILE__), ['jQueryUI']);
 
         
         ###  STYLES
@@ -154,7 +154,7 @@ class MCI_Footnotes {
             'mci-footnotes-css-public',
             plugins_url('../css/public.css', __FILE__),
             '',
-            '2.1.0'
+            '2.1.1d0'
         );
     }
     
diff --git a/css/public.css b/css/public.css
index b9c8144..a646577 100755
--- a/css/public.css
+++ b/css/public.css
@@ -4,9 +4,9 @@
  * Created-Date: 15.05.14
  * Created-Time: 16:21
  * Since: 1.0
- * Version: 2.1.0
+ * Version: 2.1.1d0
  *
- * Last modified: 2020-11-08T2150+0100
+ * Last modified: 2020-11-08T2243+0100
  */
  
  
diff --git a/footnotes.php b/footnotes.php
index 4ee0cf2..4f0cf0c 100755
--- a/footnotes.php
+++ b/footnotes.php
@@ -4,7 +4,7 @@
     Plugin URI: https://wordpress.org/plugins/footnotes/
     Description: time to bring footnotes to your website! footnotes are known from offline publishing and everybody takes them for granted when reading a magazine.
     Author: Mark Cheret
-    Version: 2.1.0
+    Version: 2.1.1d0
     Author URI: http://cheret.de/plugins/footnotes-2/
     Text Domain: footnotes
     Domain Path: /languages
diff --git a/readme.txt b/readme.txt
index 26693df..05ca59a 100755
--- a/readme.txt
+++ b/readme.txt
@@ -80,6 +80,9 @@ Visit this swift write-up from a **footnotes** user by the name of **Southwest**
 
 == Changelog ==
 
+= 2.1.1d0
+- Bugfix: Libraries: Switched jQuery UI to third party to look whether it can fix a broken tooltip display   2020-11-07T1604+0100/2020-11-08T2242+0100
+
 = 2.1.0 =
 - Add: UI: Tooltip: made 'Continue reading' button label customizable
 - Bugfix: Layout: Footnote referrers: disabled bottom border for theme compatibility