RichTextarea not displaying correctly in a Bootstrap modal

I have the following form.

forms.py

class PersonForm(forms.Form):
    name = fields.CharField()
    text = fields.CharField(widget=RichTextarea())

which is rendered using:

urls.py

    path(
        "test_form/",
        FormView.as_view(
            form_class=PersonForm,
            template_name="test_form/test_form.html",
            success_url="/test_form/",
        ),
    ),

test_form.html (modal code copied from: Bootstrap docs)

{% load static %}
{% load render_form from formsetify %}
<!DOCTYPE html>
<html dir="ltr" lang="{{ LANGUAGE_CODE|default:'en' }}">

<head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=5.0"/>
    <title>Django-Formset Demo</title>
    <link href="{% static 'vendor/bootstrap/dist/css/bootstrap.min.css' %}" rel="stylesheet" type="text/css" media="screen">
    <script type="module" src="{% static 'formset/js/django-formset.js' %}"></script>
</head>

<body>
<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <h1 class="modal-title fs-5" id="exampleModalLabel">Modal title</h1>
        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
      </div>
      <div class="modal-body">
        <django-formset endpoint="{{ request.path }}" csrf-token="{{ csrf_token }}">
          {% render_form form "bootstrap" field_classes="mb-4" form_classes="rounded-xl" %}
          <button type="button" df-click="submit -> proceed">Submit</button>
        </django-formset>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#exampleModal">
  Launch demo modal
</button>
</body>
<script src="{% static 'vendor/bootstrap/dist/js/bootstrap.min.js' %}"></script>
</html>

Which results in:

Hence the Charfield renders correctly but not the RichTextarea...

p.s. Outside the model everything renders correctly.

jrief / django-formset

RichTextarea not displaying correctly in a Bootstrap modal #103