If content type don't use any menu, id and classes appears inside node edit body.

With the latest 7.x-1.x-dev, I cannot duplicate that behavior. I disabled all possible menus for a content type and I see no menu_attributes in the node form.

Thanks exactly what I do and I cannot replicate the behavior. Make sure you are using the latest Menu attributes 7.x-1.x-dev and try this on a fresh install of Drupal 7.

I can confirm this issue

@juves: Are you using *any* other contrib modules? If so, please list them here.

ctools
field_group
gmap
i18n
libraries
location
panels
pathauto
token
transliteration
variable
views
webform
wsywig

and about 10 'small' modules, such as colorbox, galleria, link, starraiting, tablefield, imce and custom_breadcrumbs

If you are going to duplicate it, you must try with a fresh install of core, or all your other contrib modules disabled. I have not been able to reproduce it, therefore without hard proof it leads me to believe that another module is interfering somehow.

I can test it on a clean installation, but you already did that, so I think it's don't needed anymore.

I will copy my site to test server and will disable one module after another, but only on the weekend, if it will still be needed.

No response in two months, so marking this as cannot reproduce.

Confirm that this behavior occurs with the "Default menu links" also enabled. Disabling that module will 'fix' the problem.