Left is how it usually looks, and how it looks tonight if I open a thread. Right is now it's been looking tonight when I go to the next page of whatever thread I'm looking at. If I do a hard refresh, it appears as on the left briefly before settling on looking like the right. It might look like a subtle difference to some, but when you've been looking at something one way for years, it really bugs you when it changes. I had a Chrome update pending, when I restarted for that it didn't help.
