Lemmy's 0.19.6 introduces some bug fixes but it also introduced a nasty bug which breaks image rendering in many posts See here and since this instance hosts a lot of image based content it would probably be a good idea for us to hold off on upgrading until this is fixed. I do not know yet if this bug will apply retroactively, as in, if all posts made or affected by this will be fixed once a fix rolls out or if they'll be screwed up forever or until editing or re-posting.
I encourage people in instances which have not updated yet to cross-post this to their instance's meta community or ping their instance admins to let them know.
It's not, it's still happening on the other instances, here's a different one on Lemmy.ml which isn't working, but is working here.
I think whatever that change they did was a bad idea, an example of trying to fix what isn't broken.