A related issue with actions (I assume), in case it helps with finding the cause:
Dec 4 2018
Oct 31 2018
@Campbell Barton (campbellbarton) Thanks for the reply! I understand that there's other more urgent things for these image empties, but I just want to emphasize that I think this would be a really good feature for adding graphics to animations, even without shading! In fact when I saw the new add image option and saw how easy the process was, I got really excited because I thought I'd get to use this for my commercial work where we often need to add lots of symbols/icons in the animations :)
Oct 30 2018
Is there plans to make it possible to have these empty images show up in renders? There doesn't seem to be a task for that. Yes, we can use planes with textures for that, but I think for many cases it'd be much more convenient to be able to make these renderable. Without materials/shadows, of course, in GP style.