I realize you found what you were looking for, but I thought I'd post anyways.
IIRC: I originally posted this in the previous incarnation of the forums (RIP, 2007-2014). The search issue was indeed fixed not long after it arose in the aftermath of the May 2013 forum outage.
But then the forums died for good in February 2014*. After some time spent on the temporary oberin.tk, Ariki delivered us a shiny new website, which is the one we are currently using. Unfortunately, some things were missing.
For one, the search feature just plain didn't work. Still doesn't. It would be nice to have it back at some point, but I gather it's near the bottom of a very long list of priorities. At least we have google
Also, any topic that had an apostrophe in its title failed to transfer over to the new forums. (There is a roundabout way to view these topics, if you're curious). I imagine this issue is even lower on the list of priorities.
*Date is a rough estimation. I lost a good deal of chat logs from this period of time, and the Wayback Machine is being feisty with me again.