It was also nice to be able to edit the BBCode in that thread, but now I see there's no option for that.
Am I missing something or have these features not been included with the new platform?
^That was using the RTE and works the same as BB Code using that more advanced box. You just highlight & paste in the URL.
When a post was originally created in the advanced editor, you can only use that to make further edits. You can either do it WYSIWYG style or edit the HTML.