Index: gc_lang/fr/webext/content_scripts/panel_gc.js
==================================================================
--- gc_lang/fr/webext/content_scripts/panel_gc.js
+++ gc_lang/fr/webext/content_scripts/panel_gc.js
@@ -430,11 +430,11 @@
         this.stopWaitIcon();
     }
 
     _sendTextToClipboard (sText)  {
         this.xClipboardButton.textContent = "⇒ presse-papiers";
-        if (navigator.hasOwnProperty("clipboard") && navigator.clipboard.hasOwnProperty("writeText")) {
+        if (navigator.clipboard && navigator.clipboard.writeText) {
             // Firefox 63+, Chrome 66+
             // Working draft: https://developer.mozilla.org/en-US/docs/Web/API/Clipboard
             navigator.clipboard.writeText(sText)
             .then(
                 (res) => { window.setTimeout(() => { this.xClipboardButton.textContent = "📋"; }, 2000); }
@@ -447,10 +447,11 @@
         }
     }
 
     _sendTextToClipboardFallback (sText) {
         try {
+            console.log("send text to clipboard fallback");
             // Copy to clipboard fallback
             // recipe from https://github.com/mdn/webextensions-examples/blob/master/context-menu-copy-link-with-types/clipboard-helper.js
             function setClipboardData (xEvent) {
                 document.removeEventListener("copy", setClipboardData, true);
                 xEvent.stopImmediatePropagation();