Index: gc_lang/fr/mailext/content/overlay.js
==================================================================
--- gc_lang/fr/mailext/content/overlay.js
+++ gc_lang/fr/mailext/content/overlay.js
@@ -370,11 +370,11 @@
             let iPos = lCurSet.indexOf("spellingButton") + 1 || lCurSet.length;
             let aSet = lCurSet.slice(0, iPos).concat(sButtonId).concat(sButtonId2).concat(lCurSet.slice(iPos));
             xNavBar.setAttribute("currentset", aSet.join(","));
             //xNavBar.currentSet = aSet.join(",");
             Services.xulStore.persist(xNavBar, "currentset");
-            Ci.BrowserToolboxCustomizeDone(true);
+            //Ci.BrowserToolboxCustomizeDone(true);
         }
     },
     clearPreview: function () {
         let xPreview = document.getElementById("grammalecte-errors");
         while (xPreview.firstChild) {