It is impossible to delete a menu on Parrot Upfront theme

Before you guys have released Upfront Builder plugin I was using Parrot theme to build new themes from scratch. But now I see that when I try to delete a menu on appearance it just creates a new one again. That is happening on The access is already granted and you guys can delete Parrot Footer menu 1, 2,3 or 4 for testing that up. Thank you!