Same problem here. I desperately want the sync button back!
I would like to say more but I am writting from France and I am not sure that everybody will understand me correctly.
I want this button back because I work a lot simultaneasly on my phone and my mac. And sometimes I need to push the synchronization.
I have used the new version and the synch is not automatic. And if I took the time to look for a way to ask this, it is because it means a lot.
Thanks