Page Settings page of unsaved release is unformatted, image gets lost

- On Comic Details page, click "Create new release"
- On Release Settings page, click "Click or drag image files..."
- Select an image and upload it
- On the thumbnail for the uploaded image, click the small gear icon
= Instead of the small pop-up panel you get if you click the gear icon of a saved page, you are taken to what appears to be an unformatted page, with various plain text, image, and form elements listed down the left side of the screen.

Additionally, if at this point you hit the Back button in your browser--which seems to be the only way out--you will find that the image you had uploaded is now missing.