I found a bug in the Indigo template. The essence of the error is that the template does not define the class "sp-menu-heading" which is referenced by helixultimate in the file $root$\plugins\system\helixultimate\src\Core\Classes\HelixultimateMenu.php (line 655 - $ class .= 'sp-menu-heading';)
The existence of this error leads to the fact that the last item of the main menu "ADDONS" is displayed incorrectly, both in terms of character weight and intercharacter distance, and Hover does not work for it since the required style 'sp-menu-heading' is not described in the template.
https://demo.joomshaper.com/?template=indigo
And if you select the “Home-Creative” item in the menu, then the “ADDONS” menu item is not visible at all.
I have reason to believe that when setting up the menu, the "Menu Item Type" was simply specified incorrectly. Initially, the type “Menu heading” was set, but the type should have been set, for example, “URL”, and “Link” should have been set to “#”. When such changes are made, everything begins to display correctly. This bug should be corrected in other similar menu items.