I had made a post in the feature request forum, but it sounds like this is a bug report instead...
When specifying episodes using the "ids" argument for the playlist player, the specified order is ignored. Regardless of the order, the player reorders them by descending date.
Here's a link to a test page on my site:https://zachherbert.com/subscribe/
There are three ids added to the list, using the shortcode:
powerpress_playlist itunes_subtitle=true date="false" ids="3444, 3581, 3450"
Which should be oldest, newest, middle. But as you can see, the player reorders them by descending date.