v5: <sup> <sub> inconsistent styling

Created by: misterybodon

Context

• Booststrap Version: 5.0.0-alpha1/css/bootstrap.min.css
• Mozilla FIrefox 79.0, either locally or codepen:

CODE

<ul class='breadcrumb'>
  <li class='breadcrumb-item'>
    <sub>0</sub>H
    <sup>0</sup>
  </li>
</ul>

• Minimal working example: https://codepen.io/misterybodon/pen/gOrWqVN

Output