diff --git a/browser/components/preferences/tests/browser.ini b/browser/components/preferences/tests/browser.ini
index 953475be045f..66673b4e94b7 100644
--- a/browser/components/preferences/tests/browser.ini
+++ b/browser/components/preferences/tests/browser.ini
@@ -21,7 +21,6 @@ skip-if = !updater
 [browser_experimental_features_filter.js]
 [browser_experimental_features_hidden_when_not_public.js]
 [browser_experimental_features_resetall.js]
-[browser_experimental_features_restart_required_cancel.js]
 [browser_filetype_dialog.js]
 [browser_search_no_results_change_category.js]
 [browser_search_within_preferences_1.js]
diff --git a/browser/components/preferences/tests/browser_experimental_features_restart_required_cancel.js b/browser/components/preferences/tests/browser_experimental_features_restart_required_cancel.js
deleted file mode 100644
index e155fff54652..000000000000
--- a/browser/components/preferences/tests/browser_experimental_features_restart_required_cancel.js
+++ /dev/null
@@ -1,47 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-add_task(async function testInfiniteCancelLoop() {
-  await SpecialPowers.pushPrefEnv({
-    set: [["browser.preferences.experimental", true]],
-  });
-
-  const server = new DefinitionServer();
-  server.addDefinition({
-    id: "test-featureA",
-    isPublic: true,
-    preference: "test.feature.a",
-    restartRequired: true,
-  });
-  await BrowserTestUtils.openNewForegroundTab(
-    gBrowser,
-    `about:preferences?definitionsUrl=${encodeURIComponent(
-      server.definitionsUrl
-    )}#paneExperimental`
-  );
-  let doc = gBrowser.contentDocument;
-
-  // Trigger and cancel a feature that has restart-required=true to make
-  // sure that we don't enter an infinite loop of prompts.
-  let featureCheckbox = doc.getElementById("test-featureA");
-  ok(featureCheckbox, "Checkbox should exist");
-  let newWindowPromise = BrowserTestUtils.domWindowOpened();
-  featureCheckbox.click();
-
-  let restartWin = await newWindowPromise;
-  let dialog = await TestUtils.waitForCondition(() =>
-    restartWin.document.querySelector(`dialog`)
-  );
-  let cancelButton = dialog.shadowRoot.querySelector(`[dlgtype="cancel"]`);
-  ok(cancelButton, "Cancel button should exist in dialog");
-  let windowClosedPromise = BrowserTestUtils.domWindowClosed(restartWin);
-  cancelButton.click();
-  await windowClosedPromise;
-
-  // If a new prompt is opened then the test should fail since
-  // the prompt window will have leaked.
-
-  BrowserTestUtils.removeTab(gBrowser.selectedTab);
-});