Index: sites/all/modules/contrib/ctools/js/modal.js
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- sites/all/modules/contrib/ctools/js/modal.js	(date 1573576290000)
+++ sites/all/modules/contrib/ctools/js/modal.js	(date 1573576563231)
@@ -299,6 +299,7 @@
     // content. This is helpful for allowing users to see error messages at the
     // top of a form, etc.
     $('#modal-content').html(response.output).scrollTop(0);
+    $(document).trigger('CToolsAttachBehaviors', $('#modalContent'));

     // Attach behaviors within a modal dialog.
     var settings = response.settings || ajax.settings || Drupal.settings;