the way bbPress outputs the login page bugs me, a lot. What I am trying to do is add a login box to my layout, when I did – I found it added a list and a horrible fieldset around the whole thing. This doesn’t work with my design at all.
are you using the shortcode [bbp-login] ??
you should use that shortcode if not.
more shortcodes supplied with bbPress that you can use.
https://codex.bbpress.org/shortcodes/
I found there is no template readily available to just change. Really?
yes there is its called form-user-login.php
So, it seems all I can do is hack away at the core code, which will all be reverted once a new version comes around.
dont do that