diff --git a/browser/base/content/tabbrowser.js b/browser/base/content/tabbrowser.js
index 8ec4c7c766e3..d407cbcc15e8 100644
--- a/browser/base/content/tabbrowser.js
+++ b/browser/base/content/tabbrowser.js
@@ -6128,18 +6128,7 @@
       });
 
       let tabContextFTLInserter = () => {
-        MozXULElement.insertFTLIfNeeded("browser/tabContextMenu.ftl");
-        // Un-lazify the l10n-ids now that the FTL file has been inserted.
-        document
-          .getElementById("tabContextMenu")
-          .querySelectorAll("[data-lazy-l10n-id]")
-          .forEach(el => {
-            el.setAttribute(
-              "data-l10n-id",
-              el.getAttribute("data-lazy-l10n-id")
-            );
-            el.removeAttribute("data-lazy-l10n-id");
-          });
+        this.translateTabContextMenu();
         this.tabContainer.removeEventListener(
           "contextmenu",
           tabContextFTLInserter,
@@ -6291,6 +6280,22 @@
       });
     },
 
+    translateTabContextMenu() {
+      if (this._tabContextMenuTranslated) {
+        return;
+      }
+      MozXULElement.insertFTLIfNeeded("browser/tabContextMenu.ftl");
+      // Un-lazify the l10n-ids now that the FTL file has been inserted.
+      document
+        .getElementById("tabContextMenu")
+        .querySelectorAll("[data-lazy-l10n-id]")
+        .forEach(el => {
+          el.setAttribute("data-l10n-id", el.getAttribute("data-lazy-l10n-id"));
+          el.removeAttribute("data-lazy-l10n-id");
+        });
+      this._tabContextMenuTranslated = true;
+    },
+
     setSuccessor(aTab, successorTab) {
       if (aTab.ownerGlobal != window) {
         throw new Error("Cannot set the successor of another window's tab");
diff --git a/browser/modules/TabsList.jsm b/browser/modules/TabsList.jsm
index aab7956b7a52..6dae81a110b1 100644
--- a/browser/modules/TabsList.jsm
+++ b/browser/modules/TabsList.jsm
@@ -199,6 +199,7 @@ class TabsPanel extends TabsListBase {
         if (!this.listenersRegistered && event.target == this.view) {
           this.panelMultiView = this.view.panelMultiView;
           this._populate(event);
+          this.gBrowser.translateTabContextMenu();
         }
         break;
       case "command":