I want to track changes on my html fields. It doesn't work with the usual code.

class ProductTemplateInherited(models.Model):    

_name = "product.template"    
_inherit = ['product.template', 'mail.thread']   
test_html = fields.Html(string="test", translate=True, sanitize=False, track_visibility='always')

For selections or checkboxes etc. it works as usual. Is there a way to make it work for html fields aswell?