This was a real head scratcher. Not sure exactly why but, of all the templates used by django-registration, this one template has an issue. But it does.
registration/password_reset_form.html
For some reason, the admin password reset form comes up instead of that one.
The solution is to define the TEMPLATE_DIRS variable in your settings.py file. Like this:
TEMPLATE_DIRS = (‘myapp/templates/’, ‘myapp/templates/registration/’)
Of course, substitute your template dirs.