diff --git a/browser/components/urlbar/private/AddonSuggestions.sys.mjs b/browser/components/urlbar/private/AddonSuggestions.sys.mjs
index 2d508c53c497..ac950c192b62 100644
--- a/browser/components/urlbar/private/AddonSuggestions.sys.mjs
+++ b/browser/components/urlbar/private/AddonSuggestions.sys.mjs
@@ -56,7 +56,6 @@ export class AddonSuggestions extends BaseFeature {
       lazy.QuickSuggest.jsBackend.register(this);
     } else {
       lazy.QuickSuggest.jsBackend.unregister(this);
-      this.#suggestionsMap.clear();
     }
   }
 
diff --git a/browser/components/urlbar/private/AdmWikipedia.sys.mjs b/browser/components/urlbar/private/AdmWikipedia.sys.mjs
index 503908e79374..7dc7e4f56d5a 100644
--- a/browser/components/urlbar/private/AdmWikipedia.sys.mjs
+++ b/browser/components/urlbar/private/AdmWikipedia.sys.mjs
@@ -57,7 +57,6 @@ export class AdmWikipedia extends BaseFeature {
       lazy.QuickSuggest.jsBackend.register(this);
     } else {
       lazy.QuickSuggest.jsBackend.unregister(this);
-      this.#suggestionsMap.clear();
     }
   }
 
diff --git a/browser/components/urlbar/private/MDNSuggestions.sys.mjs b/browser/components/urlbar/private/MDNSuggestions.sys.mjs
index 889263b280b5..952a0b62f8ae 100644
--- a/browser/components/urlbar/private/MDNSuggestions.sys.mjs
+++ b/browser/components/urlbar/private/MDNSuggestions.sys.mjs
@@ -49,7 +49,6 @@ export class MDNSuggestions extends BaseFeature {
       lazy.QuickSuggest.jsBackend.register(this);
     } else {
       lazy.QuickSuggest.jsBackend.unregister(this);
-      this.#suggestionsMap.clear();
     }
   }
 
diff --git a/browser/components/urlbar/tests/quicksuggest/unit/test_quicksuggest_nonUniqueKeywords.js b/browser/components/urlbar/tests/quicksuggest/unit/test_quicksuggest_nonUniqueKeywords.js
index 8ac7b85ba250..cf4f8aecc6cf 100644
--- a/browser/components/urlbar/tests/quicksuggest/unit/test_quicksuggest_nonUniqueKeywords.js
+++ b/browser/components/urlbar/tests/quicksuggest/unit/test_quicksuggest_nonUniqueKeywords.js
@@ -255,7 +255,6 @@ add_task(async function () {
 
         UrlbarPrefs.set("suggest.quicksuggest.sponsored", sponsored);
         UrlbarPrefs.set("suggest.quicksuggest.nonsponsored", nonsponsored);
-        await QuickSuggestTestUtils.forceSync();
 
         // Set up the search and do it.
         let context = createContext(keyword, {
@@ -280,6 +279,5 @@ add_task(async function () {
 
     UrlbarPrefs.set("suggest.quicksuggest.sponsored", true);
     UrlbarPrefs.set("suggest.quicksuggest.nonsponsored", true);
-    await QuickSuggestTestUtils.forceSync();
   }
 });