Denied Buggy previewer

This usually happens when someone posts a thread or replies to a thread that you can't see, or in a section that you can't access.
This is why you'll see a mismatch in the last user who posted in that section and their profile picture, especially in the Support section and its subsections.
The reason why their profile pic showed up might be because they posted an appeal in the appeal section, but because you can't see it, it won't reflect in the "Last post" column, but the image will still show up.