Android apps not loading images for some feeds

[scubbo]

I recently installed Miniflux and am loving it. The Web UI works perfectly. However, I've tried installing both Flux News and Miniflutt on my Android phone, and in both apps some feeds only load text, not the image. See screenshots:

Phone App:

Web UI:

(These are from this feed, though this feed seems to have the same problem))

[BrutalBirdie]

I see a lot of mixed content in that rss QCRSS.
Much http:// and https:// some browsers (including apps, since they are many times nothing else) are very strict and will block mixed content aka. just not display http://.
Like exactly the T. rex picture:

http://www.qwantz.com/comics/comic2-5025.png

This is http:// and might be blocked.
Thus, either the rss/qcrss provider needs to deliver https:// only or the might be some workaround for phone apps to allow mixed content
Just my first thoughts about this issue.