Fixes #1592 Fixes #1591

petkaantonov · May 24, 2019 · b96656e · b96656e
1 parent 17f69f3
commit b96656e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/schedule.js b/src/schedule.js
@@ -31,7 +31,8 @@ if (util.isNode && typeof MutationObserver === "undefined") {
 } else if ((typeof MutationObserver !== "undefined") &&
           !(typeof window !== "undefined" &&
             window.navigator &&
-            (window.navigator.standalone || window.cordova))) {
+            (window.navigator.standalone || window.cordova)) &&
+          ("classList" in document.documentElement)) {
     schedule = (function() {
         // Using 2 mutation observers to batch multiple updates into one.
         var div = document.createElement("div");