Hi @meir321
when you disable the plugin in the backend, you will miss some admin menu items.
The Admin Menu toolbar provides the missing menu items without loading the disabled plugins. The navigation is taken by the cache of Freesoul Deactivate Plugins.
You can disable it by going to Freesoul Deactivate Plugins => Backend => Backend Singles. Uncheck “Check it to show a simplified admin navigation in the top bar when the main navigation misses some menu items.” and save.
I guess it disturbs you because it’s full height, right? If so, I will take it into account for future versions. Please, let me know what disturbs you the most.