From 8c33720d16c00e6e2f759e54b4fbf1e710986ba4 Mon Sep 17 00:00:00 2001
From: gorhill <rhill@raymondhill.net>
Date: Sun, 8 Oct 2017 23:47:23 -0400
Subject: [PATCH] fix #3111

---
 platform/chromium/manifest.json | 2 +-
 src/js/cosmetic-filtering.js    | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/platform/chromium/manifest.json b/platform/chromium/manifest.json
index d1b66fa1b..5c8826760 100644
--- a/platform/chromium/manifest.json
+++ b/platform/chromium/manifest.json
@@ -2,7 +2,7 @@
     "manifest_version": 2,
 
     "name": "uBlock Origin",
-    "version": "1.14.12",
+    "version": "1.14.14",
 
     "commands": {
         "launch-element-zapper": {
diff --git a/src/js/cosmetic-filtering.js b/src/js/cosmetic-filtering.js
index 3e4d56070..6020466c6 100644
--- a/src/js/cosmetic-filtering.js
+++ b/src/js/cosmetic-filtering.js
@@ -51,6 +51,14 @@ var isValidCSSSelector = (function() {
     } else {
         matchesFn = div.querySelector.bind(div);
     }
+    // https://github.com/gorhill/uBlock/issues/3111
+    //   Workaround until https://bugzilla.mozilla.org/show_bug.cgi?id=1406817
+    //   is fixed.
+    try {
+        matchesFn(':scope');
+    } catch (ex) {
+        matchesFn = div.querySelector.bind(div);
+    }
     return function(s) {
         try {
             matchesFn(s + ', ' + s + ':not(#foo)');