The picture below illustrates the misalignment of the text inside the "Export" button. Running OS X 10.8.
I will report the issue to Development. Thanks!
This issue should be resolved in 4.6a Beta 3 for beta users, and in general when 4.6a ships to the stable channel.
Confirmed fix in Logos 4.6a Beta 4 on OS X 10.8.2
Keep Smiling [:)]