diff --git a/devtools/client/inspector/rules/test/browser.ini b/devtools/client/inspector/rules/test/browser.ini
index a203ffa2b2c1..85a358e92e19 100644
--- a/devtools/client/inspector/rules/test/browser.ini
+++ b/devtools/client/inspector/rules/test/browser.ini
@@ -208,7 +208,6 @@ skip-if = (os == "win" && debug) # bug 963492: win.
 [browser_rules_mark_overridden_06.js]
 [browser_rules_mark_overridden_07.js]
 [browser_rules_mathml-element.js]
-[browser_rules_media-queries_reload.js]
 [browser_rules_media-queries.js]
 [browser_rules_multiple-properties-duplicates.js]
 [browser_rules_multiple-properties-priority.js]
diff --git a/devtools/client/inspector/rules/test/browser_rules_media-queries_reload.js b/devtools/client/inspector/rules/test/browser_rules_media-queries_reload.js
deleted file mode 100644
index 9fababab69da..000000000000
--- a/devtools/client/inspector/rules/test/browser_rules_media-queries_reload.js
+++ /dev/null
@@ -1,65 +0,0 @@
-/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
-/* Any copyright is dedicated to the Public Domain.
- http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test that applicable media queries are updated in the Rule view after reloading
-// the page and resizing the window.
-
-const TEST_URI = `
-  <style type='text/css'>
-    @media all and (max-width: 500px) {
-      div {
-        color: red;
-      }
-    }
-    @media all and (min-width: 500px) {
-      div {
-        color: green;
-      }
-    }
-  </style>
-  <div></div>
-`;
-
-add_task(async function() {
-  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
-  const { inspector, view: ruleView, testActor, toolbox } = await openRuleView();
-  const hostWindow = toolbox.win.parent;
-
-  const originalWidth = hostWindow.outerWidth;
-  const originalHeight = hostWindow.outerHeight;
-
-  await selectNode("div", inspector);
-
-  info("Resize window so the media query for small viewports applies");
-  let onRuleViewRefreshed = ruleView.once("ruleview-refreshed");
-  let onResize = once(hostWindow, "resize");
-  hostWindow.resizeTo(400, 400);
-  await onResize;
-  await testActor.reflow();
-  await onRuleViewRefreshed;
-  let rule = getRuleViewRuleEditor(ruleView, 1).rule;
-  is(rule.textProps[0].value, "red", "Small viewport media query inspected");
-
-  info("Reload the current page");
-  await reloadPage(inspector, testActor);
-  await selectNode("div", inspector);
-
-  info("Resize window so the media query for large viewports applies");
-  onRuleViewRefreshed = ruleView.once("ruleview-refreshed");
-  onResize = once(hostWindow, "resize");
-  hostWindow.resizeTo(800, 800);
-  await onResize;
-  await testActor.reflow();
-  await onRuleViewRefreshed;
-  info("Reselect the rule after page reload.");
-  rule = getRuleViewRuleEditor(ruleView, 1).rule;
-  is(rule.textProps[0].value, "green", "Large viewport media query inspected");
-
-  info("Resize window to original dimentions");
-  onResize = once(hostWindow, "resize");
-  hostWindow.resizeTo(originalWidth, originalHeight);
-  await onResize;
-});
diff --git a/devtools/server/actors/reflow.js b/devtools/server/actors/reflow.js
index 50dfd433cf5d..d20e3e7c1b7a 100644
--- a/devtools/server/actors/reflow.js
+++ b/devtools/server/actors/reflow.js
@@ -466,11 +466,7 @@ ReflowObserver.prototype.QueryInterface = ChromeUtils
 class WindowResizeObserver extends Observable {
   constructor(targetActor, callback) {
     super(targetActor, callback);
-
-    this.onNavigate = this.onNavigate.bind(this);
     this.onResize = this.onResize.bind(this);
-
-    this.targetActor.on("navigate", this.onNavigate);
   }
 
   _startListeners() {
@@ -481,22 +477,10 @@ class WindowResizeObserver extends Observable {
     this.listenerTarget.removeEventListener("resize", this.onResize);
   }
 
-  onNavigate() {
-    if (this.isObserving) {
-      this._stopListeners();
-      this._startListeners();
-    }
-  }
-
   onResize() {
     this.notifyCallback();
   }
 
-  destroy() {
-    this.targetActor.off("navigate", this.onNavigate);
-    super.destroy();
-  }
-
   get listenerTarget() {
     // For the rootActor, return its window.
     if (this.targetActor.isRootActor) {