That's what I thought, and why I was a bit confused seeing it under the bug section. Are there any plans to add official support for portrait mode?
Not currently, because it's a huge undertaking. It's something we'd like to do but hasn't been scoped out yet because of the work involved in such a big project like that. So, I don't have much to share on it: other than we know it's something you guys want and we've let the team know in our feedback meetings.