They've been this way for, from what I can tell, as long as they've existed:
Server 2 only shows server 2. No information on S1 and S3.
Server 3 shows server 2 stats from roughly 3-4 weeks ago (they don't seem to ever change or update). No information on S1.
(Not sure about Server 1, as I don't have a character there at the moment).
Just wanted to clarify that this is not a temporary issue, but rather one that has seemingly existed from the start.