Check of nodeIntegration is strictly equal to false

lib/browser/guest-window-manager.js

@@ -30,7 +30,7 @@ var mergeBrowserWindowOptions = function (embedder, options) {
     mergeOptions(options, embedder.browserWindowOptions)
 
     // Disable node integration on child window if disabled on parent window
-    if (!embedder.getWebPreferences().nodeIntegration) {
+    if (embedder.getWebPreferences().nodeIntegration === false) {
       options.webPreferences.nodeIntegration = false
     }
   } else {