This doesn't really feel like a bug, so it's probably just behavior I haven't noticed in the past. But shouldn't this featured post be showing up under the bar on the right?
Since it's on MSE, it does show up on every other site's "Featured on Meta" list. But does that not exist here? The post is also eight hours old (or so), so I don't think it's a caching issue.
If it doesn't, it seems like it should. I've spent most of my day on MSE, and I'm just noticing that post now.