I can't seem to "ungrey" out the Align to option when I have two groups selected. Please tell me if I can turn it back on again in version 1.8.
This is not actually a regression, but the intended behaviour. Selecting an "Align to" option before selecting the method would not make sense, so having it greyed out is expected. The problem is on Windows, where you can select an "Align to" before doing anything else - not sure why one would need this, as it does not do anything anyways.