--- a/browser/base/content/test/tabs/browser_privilegedmozilla_process_pref.js
+++ b/browser/base/content/test/tabs/browser_privilegedmozilla_process_pref.js
@@ -154,35 +154,29 @@ add_task(async function process_switchin
 
     // Check that using the history back feature switches back to privileged mozilla content process.
     let promiseLocation = BrowserTestUtils.waitForLocationChange(
       gBrowser,
       TEST_HIGH1
     );
     browser.goBack();
     await promiseLocation;
-    // We will need to ensure that the process flip has fully completed so that
-    // the navigation history data will be available when we do browser.goForward();
-    await BrowserTestUtils.waitForEvent(newTab, "SSTabRestored");
     is(
       browser.frameLoader.remoteTab.osPid,
       privilegedPid,
       "Check that privileged page is still in privileged mozilla content process after history goBack."
     );
 
     // Check that using the history forward feature switches back to the web content process.
     promiseLocation = BrowserTestUtils.waitForLocationChange(
       gBrowser,
       TEST_LOW1
     );
     browser.goForward();
     await promiseLocation;
-    // We will need to ensure that the process flip has fully completed so that
-    // the navigation history data will be available when we do browser.gotoIndex(0);
-    await BrowserTestUtils.waitForEvent(newTab, "SSTabRestored");
     checkBrowserRemoteType(
       browser,
       E10SUtils.WEB_REMOTE_TYPE,
       "Check that tab runs in the web content process after using history goForward."
     );
 
     // Check that goto history index does not break the affinity.
     promiseLocation = BrowserTestUtils.waitForLocationChange(