This is odd... a couple posts on my BB are showing up blank, as a black box where the post should be. I see the post when I go to edit it, or quote it, but in the forum it appears as below. I tried clearing the cache to no avail. HERE is the live link; below are screenshots.

These posts appeared normally before.

Hmm, can you take a look at the source of the page and see what the content of the post is? It almost looks like the original post had some HTML in it and it's breaking the layout.

I was just gonna say "never mind"

After looking at the source, I discovered that users with certain Titles had titles that were too long for Threads (they were fine in Classic) and they were getting cut off before a closing IMG tag. I shortened the HTML in the title, and it's working fine now... Sorry to worry you!