After the new update (6.10.0.0026), the line spacing seems to be off on my Mac.
I have the same issue. It makes my labels look rather fat. I'm also on a Mac. I haven't updated to SR2 yet since my download is so very slow today. So I cannot say whether it is fixed in SR2 or not.
No, it's not fixed in the new update.
I am seeing as well and have created a case for it.
One thing you can to to help minimize the off line spacing is by setting it to loose instead of normal in the program settings.