diff --git a/cataloguing/value_builder/cn_browser.pl b/cataloguing/value_builder/cn_browser.pl
index 0a0ca0669b..5619a68a3c 100755
--- a/cataloguing/value_builder/cn_browser.pl
+++ b/cataloguing/value_builder/cn_browser.pl
@@ -39,16 +39,16 @@ function Click$function_name(ev) {
     let window_height = screen.height;
     q = document.getElementById(ev.data.id);
 
-    if(Cookies.get(\"popup_window_height\") && Cookies.get(\"popup_window_width\")){
-        window_width = Cookies.get(\"popup_window_width\");
-        window_height = Cookies.get(\"popup_window_height\");
+    if(localStorage.getItem(\"popup_window_height\") && localStorage.getItem(\"popup_window_width\")){
+        window_width = localStorage.getItem(\"popup_window_width\");
+        window_height = localStorage.getItem(\"popup_window_height\");
     }
 
     var windowref = window.open(\"../cataloguing/plugin_launcher.pl?plugin_name=cn_browser.pl&popup&q=\"+encodeURIComponent(q.value),\"cnbrowser\",\"width=\"+window_width+\"\,height=\"+window_height+\"\,toolbar=false,scrollbars=yes\");
 
     windowref.onresize = function(){
-        Cookies.set(\"popup_window_height\", windowref.innerHeight, { path: '/', sameSite: 'Lax' });
-        Cookies.set(\"popup_window_width\", windowref.innerWidth, { path: '/', sameSite: 'Lax' });
+        localStorage.setItem(\"popup_window_height\", windowref.innerHeight);
+        localStorage.setItem(\"popup_window_width\", windowref.innerWidth);
     }
 }
 
diff --git a/koha-tmpl/intranet-tmpl/prog/js/staff-global.js b/koha-tmpl/intranet-tmpl/prog/js/staff-global.js
index 3403b54768..b660011277 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/staff-global.js
+++ b/koha-tmpl/intranet-tmpl/prog/js/staff-global.js
@@ -504,6 +504,8 @@ function logOut() {
     localStorage.removeItem("patron_search_selections");
     localStorage.removeItem("item_search_selections");
     localStorage.removeItem("copiedPermissions");
+    localStorage.removeItem("popup_window_width");
+    localStorage.removeItem("popup_window_height");
 
     // Remove DataTables states
     Object.keys(localStorage).forEach(k => {