diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt
index 30f88bd8d2..e99cc4d08f 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt
@@ -450,7 +450,9 @@
                                                 <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                                             </div>
                                         <div class="modal-body">
-                                            [% default_localization.content | $raw %]
+                                            <template shadowrootmode="open">
+                                               [% default_localization.content | $raw %]
+                                            </template>
                                         </div>
                                         <div class="modal-footer">
                                             <button type="button" class="btn btn-default" data-bs-dismiss="modal">Close</button>