The notebook is definitely a synced notebook-- it has a green icon, and syncs properly between the web client and my phone. Only the mac client seems unwilling to sync, and it will indeed sync the new notes if I click the sync button...
My Evernote for Mac will not sync my new notes automatically, even though I have it set to "automatically sync every 15 minutes". If I manually initiate sync it completes just fine, but if not, no changes are propagated to the server and new notes I created on the mac don't appear on the phone or web client. Does anyone else know of this problem or what I can do to provide more information?