Support is free too depending on how you install it 
standard install
I’ll suggest doing a test. Have you tried posting the same images on other Discourse forums? You can use our demo site for tests like this: https://try.discourse.org/ or create a trial site on any of the other Discourse hosters to see if this issue persists.
It may be that you’ve discovered a bug and I answered you wrongly, so try to test it and see.