I am trying to use the Details section of the Sidebar in the Sidebar Instant app. My goal is to provide a simple how to use section with images.
I am having some trouble with the images. It seems I can add and style text, and add images by simply pasting from the clipboard (just like the classic webapps).

After I click OK and Publish
Only the text shows, the images do not show in the Sidebar Instant App

If I go back to the Details section, the images are no longer visible

However if I click edit, the images are once again visible

I have tried in both FireFox and Chrome, and have ran into the same issue. How do I get the images to show in the final Sidebar Instant app?
Thank you