Fix bug where a new contact group added after removing all groups from addressbook wasn't added to the list

CHANGELOG

@@ -6,6 +6,7 @@ CHANGELOG Roundcube Webmail
 - Fix unread count after purge on a folder that is not currently selected (#7051)
 - Fix bug where Enter key didn't work on messages list in "List" layout (#7052)
 - Fix bug where deleting a saved search in addressbook caused display issue on sources/groups list (#7061)
+- Fix bug where a new contact group added after removing all groups from addressbook wasn't added to the list
 
 RELEASE 1.4.1
 -------------

program/js/treelist.js

@@ -368,8 +368,14 @@ function rcube_treelist_widget(node, p)
     // insert as child of an existing node
     if (parent_node) {
       node.level = parent_node.level + 1;
+
       if (!parent_node.children)
         parent_node.children = [];
+      else {
+        // Remove deleted nodes from the parent to make sure re-rendering below
+        // happens when adding a new child to a parent with all nodes removed
+        parent_node.children = parent_node.children.filter(function(node) { return !node.deleted; });
+      }
 
       search_active = false;
       parent_node.children.push(node);