Softube stated that it would post an update after the new Sonar was available, as well as stating that the issues would be fixed in this new version. I'd give it a few days, or weeks, for them to post any details. Or maybe fly off an email to them for a quicker answer.
I don't think I saw anywhere on those posts what the actual issue was, but I am also interested. keep us posted if you come up with any details.