kevinrenskers I had the same issue.
I have managed to resolve it by doing this:
fieldsets = ((None, {"fields": ["user_1", "user_2"]}),)
context = dict(
self.admin_site.each_context(request),
opts=self.model._meta,
title="Copy Permissions",
form=helpers.AdminForm(
CopyPermissionsForm(),
list(fieldsets),
{},
)
)
I also have this in my html file.
{% block extrastyle %}{{ block.super }}<link rel="stylesheet" href="{% static "admin/css/forms.css" %}">{% endblock %}