title: TinyMCE: Django admin custom HTML field displays incorrectly in HTML page
body: <p>I use <strong>Django</strong> on backend and <strong>VueJS</strong> on frontend.<br />
  I use <strong>tinymce</strong> for creation custom <strong>HTML</strong> field.</p>
  <pre><code>description = CustomHTMLField('Description', blank=True, null=True)
  </code></pre>
  <p>Settings for tinymce:</p>
  <pre><code>TINYMCE_DEFAULT_CONFIG = {
      'plugins': 'print preview textcolor importcss searchreplace autolink autosave save directionality visualblocks visualchars fullscreen image link media codesample table charmap hr pagebreak nonbreaking anchor toc insertdatetime advlist lists wordcount textpattern noneditable help charmap emoticons',
      'toolbar': 'insert | undo redo |  formatselect | bold italic backcolor forecolor  | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | removeformat | help',
      'cleanup_on_startup': True,
      'custom_undo_redo_levels': 10,
      'width': 'auto',
      'language': 'ru',
  }
  TINYMCE_FILEBROWSER = True
  </code></pre>
  <p>Code of CustomHTMLField:</p>
  <pre><code>from contextlib import suppress
  
  from tinymce import HTMLField
  
  
  class CustomHTMLField(HTMLField):
  
      def pre_save(self, model_instance, add):
          if not add:
              return super(CustomHTMLField, self).pre_save(model_instance, self.attname)
  
          html_field: str = getattr(model_instance, self.attname, &quot;&quot;)
          with suppress(AttributeError):
              return html_field.replace('../../../../', '../../../../../')
  </code></pre>
  <p>I need to add some text with list into this field. On Django admin page I have indent:
  <a href="https://i.stack.imgur.com/yJqIl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yJqIl.png" alt="enter image description here" /></a></p>
  <p>But on frontend I don't have the indent: <br />
  <a href="https://i.stack.imgur.com/Mz8Jf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Mz8Jf.png" alt="enter image description here" /></a> <br />
  How can I fix the problem?</p>