Steps to reproduce:

1. Go to any form in boost
2. Save the html
3. View the html in your editor

Expected results:
Html is well formed.

Actual results:
Most form elements are duplicating the type= attribute, example from adding a forum post:

      <input type="text"

                class="form-control "

                name="subject"

                id="id_subject"

                value=""

                size="48"

                type="text" >

Note that web inspectors are not showing this, so you need to look at the html in another tool

I haven't examined how wide this problem spreads, whether it affects other themes,e tc.