help_text is not displayed in date fields
Django version: 1.11 Django Suit version: v2 Python version: 2.7.8
Issue:
help_text is not displayed in date fields
Example (in Russian):
expire_date = models.DateField(null=True, blank=True, verbose_name='Активен до', help_text='Если оставить поле пустым, карта будет активна всегда')

Can confirm this is still not working (Django 1.18; Python 3.7):

and also:

This is the problem with the widget-AdminSplitDateTime class, which sets the font-size to 0. This can be solved, for example, with your own CSS sheet. In the file templates/admin/base.htm include your own CSS stylesheet:
{% block extrastyle %}
{{ block.super }}
<link rel="stylesheet" type="text/css" href="{% static 'css/admin.css' %}" media="all"/>
{% endblock %}
and in admin.css redefine the help-text class specifying the size in pixels:
small.text-help {
font-size: 11.375px !important;
}