From cb71fb494cd57bee3265164bb1ea9ed2ead2ee89 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Thu, 10 Dec 2020 12:51:26 -0500
Subject: [PATCH] Fix DOM watcher not reporting removal of elements

Related issue:
- https://github.com/uBlockOrigin/uBlock-issues/issues/1392

Regression from:
- https://github.com/gorhill/uBlock/commit/6112a68faf46d89c58defdd9e14d4342747c9523
---
 src/js/contentscript.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/js/contentscript.js b/src/js/contentscript.js
index fb5e1932e..3ce10096f 100644
--- a/src/js/contentscript.js
+++ b/src/js/contentscript.js
@@ -362,7 +362,7 @@ vAPI.SafeAnimationFrame = class {
     };
 
     // https://github.com/chrisaljoudi/uBlock/issues/205
-    // Do not handle added node directly from within mutation observer.
+    //   Do not handle added node directly from within mutation observer.
     const observerHandler = function(mutations) {
         let i = mutations.length;
         while ( i-- ) {
@@ -376,7 +376,7 @@ vAPI.SafeAnimationFrame = class {
                 removedNodeLists.push(nodeList);
             }
         }
-        if ( addedNodeLists.length !== 0 || removedNodes ) {
+        if ( addedNodeLists.length !== 0 || removedNodeLists.length !== 0 ) {
             safeObserverHandlerTimer.start(
                 addedNodeLists.length < 100 ? 1 : undefined
             );