Docs falsely claim "not-allowed" cursor for labels inside fieldset.disabled

Created by: Herst

From http://getbootstrap.com/css/#checkboxes-and-radios:

To have the for the checkbox or radio also display a "not-allowed" cursor when the user hovers over the label, add the .disabled class to your .radio, .radio-inline, .checkbox, .checkbox-inline, or <fieldset>

(bold highlighting by me)

Either the doc is wrong or the theme is missing something but adding the disabled class to an encompassing fieldset makes no difference.

Testcase with comparison to the other methods leading to the wanted result: http://jsbin.com/kacawu/3/edit?html,output (Bootlint and HTML validator passed).