We no longer wait for <iframe> elements that have already finished …

…loading

CHANGELOG.md

@@ -7,6 +7,7 @@ This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html
 
 - We now only wait for `<script>` elements with a JavaScript type
 - We only wait for `<iframe>` elements with a `[src]` attribute
+- We no longer wait for `<iframe>` elements that have already finished loading
 
 
 # 2.2.1

lib/capybara-lockstep/helper.js

@@ -190,7 +190,12 @@ window.CapybaraLockstep = (function() {
   function isTrackableIFrame(element) {
     return element.matches('iframe[src]') &&
       !hasDataSource(element) &&
-      element.getAttribute('loading') !== 'lazy'
+      element.getAttribute('loading') !== 'lazy' &&
+      !hasIFrameFinishedLoading(element)
+  }
+
+  function hasIFrameFinishedLoading(element) {
+    return element.contentDocument && element.contentDocument.readyState === 'complete'
   }
 
   function isTrackableScriptType(type) {