The Alt Text for images in headline elements doesn’t seem to be getting passed through.
Repro:
- Add a headline element
- Turn on graphic, and set it to use an image (in this case, using the DC for gravatar url)
- Fill in the Alt Text field (in my case, using a mix of DC & typed text)

- Save, then inspect that element on the front end

Observed:
The Alt Text is just “Image”