I don't know any active one. An inactive one would be at G3:
http://forums.gibberlings3.net/index.php?showtopic=9019Feel free to post any and all bugs you encounter!
If you are interested in working on this further, I am sure you could get access to the fixpack workroom at G3. Anyone ready to drive this further is more than welcome. The G3 fixpack would have to be scanned as to which fixes are implemented, though (that's one of the reaons why I didn't do anything with it yet, I don't have the time).