hello. in the control panel, incorrect names are displayed, as well as packages that have been deleted.
In the menu on the left, you can go to “Cog-Wheel icon” → “Menus” (“Меню”) to manage the menu items.
Right-click the menu item and choose “Edit” (“Редактировать”) to change it. I believe if you delete the value in the “Icon” field, you get the right name again.
Choose right-click → “Delete” to delete a menu item. (Although if you uninstalled the extra correctly, these menu items shouldn’t exist anymore.)