This is a simple test of a basic text post.
I just did the following.
Published as a text post in two steps (saved, then went back in a new session and published).
Did an existing header image from the site media as a featured image via an update.
Will now attempt to add a new image.
OK – I updated the publication time from 2:27 to 0:01 in order to make it come in before the daily.