I need to insert empty html elements like below in Source Editing in CKeditor5, but CKEditor5 will automatically remove these once back to Editor view.
<span id="message"></span>
<i class="fa fa-user"></i>
I have set htmlSupport.allow to open for all html elements in GeneralHtmlSupport, it's not working, also I have checked Ckeditor5 official forum and can't find an achievable solution.
I appreciate if you have a hint or solution.