I think that the solution of doing
remove_filter( 'the_content', 'wpautop' );
remove_filter( 'the_excerpt', 'wpautop' );is not a good idea as my other WYSIWYG editors are providing clear data.
I think the problem is in the moment of saving form data, but I’m not sure. I’ll check in monday if the records saved in DB includes the unnecessary <br /> tags