Ensure the browser close confirmation is only shown when closing a Query Tool which is running in a separate browser tab. Fixes #4403

docs/en_US/release_notes_4_10.rst

@@ -13,3 +13,5 @@ New features
 
 Bug fixes
 *********
+
+| `Bug #4403 <https://redmine.postgresql.org/issues/4403>`_ - Ensure the browser close confirmation is only shown when closing a Query Tool which is running in a separate browser tab.

web/pgadmin/tools/sqleditor/static/js/sqleditor.js

@@ -584,8 +584,6 @@ define('tools.querytool', [
         };
       });
 
-      pgBrowser.bind_beforeunload();
-
       /* If the screen width is small and we hover over the Explain Options,
         * the submenu goes behind the screen on the right side.
         * Below logic will make it appear on the left.
@@ -631,6 +629,7 @@ define('tools.querytool', [
        * instead, a poller is set up who will check
        */
       if(self.preferences.new_browser_tab) {
+        pgBrowser.bind_beforeunload();
         setInterval(()=>{
           if(window.opener.pgAdmin) {
             self.reflectPreferences();