I have this same problem. I have 928 with latest DP update + whatever Verizon released last month (after Denim), and Win 8.1 tablet. I noticed on tablet I had synced all favorites from phone long time ago. I deleted them on tablet and added one website, but it doesn't sync. I checked syncing from phone to tablet, it doesn't work either. I have to mention that on tablet and on phone I checked the sync settings and everything is as it must be. Any idea why it doesn't work?
I know the syncing is working (partly at least) On phone under sync setting I had Theme turned off, and when I turned it on, theme on phone switched to the same as on tablet. So why doesn't favorites work?
01-20-2015 09:08 AM