From f82624f7cd5bbfe4fdfd222edd6a1f8700d473e9 Mon Sep 17 00:00:00 2001
From: Matthew Bargar <mbargar@gmail.com>
Date: Thu, 29 Dec 2016 17:29:40 -0500
Subject: [PATCH] Fix error switching index patterns in Discover

Needed to cleanup debounced function on scope destory.

Fixes https://github.com/elastic/kibana/issues/9681
---
 src/ui/public/fixed_scroll.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ui/public/fixed_scroll.js b/src/ui/public/fixed_scroll.js
index 09963b82870c0..0eda343b37e51 100644
--- a/src/ui/public/fixed_scroll.js
+++ b/src/ui/public/fixed_scroll.js
@@ -117,11 +117,13 @@ uiModules
         }
       }
 
-      $scope.$watch(debounce(checkWidth, 100));
+      const debouncedCheckWidth = debounce(checkWidth, 100);
+      $scope.$watch(debouncedCheckWidth);
 
       // cleanup when the scope is destroyed
       $scope.$on('$destroy', function () {
         cleanUp();
+        debouncedCheckWidth.cancel();
         $scroller = $window = null;
       });
     }