See also my answer here: https://meta.superuser.com/questions/7226/how-far-can-we-go-when-asking-about-beta-software/7227#7227

> That close reason is basically there to give us a way to take care of questions where the answer is "Only _[manufacturer]_ could know," or "it's a bug, that's what you get for running pre-release software". A question about how to use new features or how something works, as in the case of this question, is fine. We just don't want to become a support site for undocumented pre-release problems that will be irrelevant as soon as the final version of the software (or hardware) is released.