Update known bugs section for Marionette in Firefox 84. (mdn#1194)

* Update known bugs for Marionette in Firefox 84. * Update index.html Co-authored-by: Chris Mills <[email protected]>
Crushford · Jan 12, 2021 · 2f04c8c · 2f04c8c
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commit 2f04c8c
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/files/en-us/mozilla/firefox/releases/84/index.html b/files/en-us/mozilla/firefox/releases/84/index.html
@@ -88,6 +88,12 @@ <h3 id="WebDriver_conformance_Marionette">WebDriver conformance (Marionette)</h3
  <li>Fixed a hang for <code>WebDriver:Back</code> encountered when the currently-selected <code><a href="/en-US/docs/Web/HTML/Element/iframe">&lt;iframe&gt;</a></code> gets unloaded ({{bug(1672758)}}).</li>
 </ul>
 
+<h4 id="WebDriver_known_bugs">Known bugs</h4>
+
+<ul>
+  <li>After page navigation, accessing a previously-retrieved element might not always raise a "stale element" error, and can also lead to a "no such element" error. To prevent this, set the <code>marionette.actors.enabled</code> preference to <code>false</code> ({{bug(1684827)}}).
+</ul>
+
 <h2 id="Changes_for_add-on_developers">Changes for add-on developers</h2>
 
 <ul>