Oh, another interesting little hiccup I discovered.

I was looking through my PMs, and there's an empty page that reads this:

[quote][center]Page is empty.
In the future I'll prevent you from landing on an empty page.
← Back to Page 1[/center][/quote]

I'm sure it's a message intended to show up when browsing forum pages, but it also show up when there's nothing in an inbox folder.