Impossible to insert more than 1 icon in CKEditor Rich Text wysiwyg field

To replicate: install module and library, enable module as local library with SVG/JS, enable for a rich text CKEditor field, add a content node that includes a rich text html field. Insert an icon via the rich text wysiwyg. Then, attempt to insert another icon; the previous icon will disappear.

Looking in source code, the previous icon's "empty" <span class="fa-icon fab"></span> is commented out.

<span class="fontawesome-icon-inline"><span class="fa-css3-alt fab"></span>&nbsp;</span>
is changed to
<span class="fontawesome-icon-inline"><!-- <span class="fa-css3-alt fab"></span> -->&nbsp;</span>

The only way I have found to work around is to go to source code view, remove the html comment brackets, and switch back to wysiwyg.