Judging by your other question, I think you are using the Mac OS X version.
The OS X port is slightly different, and from what I've seen, does contain some minor bugs that the Windows version does not.
I will say though that the mac version really does not have the large userbase that the windows version has, so it takes a lot longer to find and fix these bugs. The OS X port also hasn't been around that long relative to the Win version so it's still in the 'testing the waters' phase I would say.