Since I am not an alpha backer (I got beta + 3 retails instead), I do not have access to the alpha forums, which seems fair. However, since we are all able to watch the video's people upload to Youtube/ Livestreams, everyone is technically able to report bugs. I understand the team does not want an overflow of bug reports (duplicates/vague reports all that kind of things) so I understand if report system does not get public, however, is there any chance we could at least read the list of bugs that have been found? so we can contribute if we noticed something that isn't listed yet, via the forum?
You should be able to see the currently reported bugs on the tracker: http://pa.lennardf1989.com/Tracker/