Just encountered this problem today. Still happening.
I even created an account on Sankakucomplex. Logged in. No difference. Still loads a weird default image. Tested the same URL in Firefox and loaded no problem.
Tested this URL (SFW): https://chan.sankakucomplex.com/post/show/22507068
When to delete cookies for the website, loaded new test page with image. Still showing the placeholder image.
