I have a problem with between your module and the field group.
I asked the question on the wire field group but I do not know who is best able to address the problem, I also ask the question here.
In fact when I made a multi-display groups, I have the captcha that appear on each page of a very unpleasant.
You can test for you here goes account for yourself.
How resolver this problem for the captcha that last page?
(sorry I'm french and google translate and my friend)