I just noticed that PPCG now has Code Review's icon in some areas of SE. I'm pretty sure this is a bug since I can't find any discussion related to it.
Basically the problem seems to appear wherever the site sprite sheet is used. Looking closer, it seems that every site's icon is off by two (one site + one meta).
Update: Looking at the stylesheet and sprite sheet the problem seems to be that the version of the sprite sheet I'm seeing has no icons for Augur. Version mismatch?
Update 2: Seems to be fixed. Anyone still experiencing this?
Top bar menus
Sidebar hot questions
User communities list
Things not affected
So far I haven't seen this anywhere else, including the favicon, the global hot question list and the site list.