Ran into a problem with a couple of WIKI names containing an ampersand (&). Clicking on any internal WIKI link within a WIKI whose name contains an ampersand returns you to the WIKI selection page as if the WIKI doesn't exist. Looking closely at the links, it appears that the WIKI name isn't escaped (or at least ampersands in wiki names are not escaped). I was going to wait and just fix it and send a pull request, but with 3.0RC coming out, I didn't want to keep the knowledge to myself in case I don't get to it right away.
Also - wasn't sure if the preferred method was the github issues tracker or here, so I submitted to both.