Bug overview description.
Before the update everything was fine, and I know new steps like these can cause bugs, so I want to point out that the main function of this site has been ripped out (for me), I can't see any thumbnails on posts and there's nothing to click on.
What part(s) of the site page(s) are affected?
The Posts' thumbnails (where they're supposed to be) are completely blank
What is the expected behavior?
Posts are supposed to show and are clickable
What actual behavior is given instead?
Posts' thumbnails are blank and unresponsive
Time of incident (if applicable).
Happened exactly when site was updated
Can you reproduce the bug every time?
I actually tried to fix it by refreshing over and over, so I can repeat the bug every single time
What steps did you take to replicate this bug?
I logged in, went to posts, refreshed, and thumbnails (where they're supposed to be) are completely unresponsive.

What device are you using?

LOL, I've seen like 4-5 posts related to this. Make one of them sticky? XD

<style id="blacklisted-hider">
    .post-preview, #image-container, #c-comments .post, .mod-queue-preview.post-preview, .post-thumbnail {
      display: none !important;
    }
  </style>

It's because some browsers don't like that 'display: none' part. They never enable visibility of those images in the resulting view. Not that I'm saying it won't cause other problems to change that to 'display: default'. I haven't really tested it enough to be sure what else it effects. :/