I'm using Firefox on my PC and Android phone, both devices have the lastest version, Firefox 30. Both devices have logged in my account and select to sync all, including" tabs from other devices". But, on my Android firefox, I can't see the tabs I open on my PC until couple of hours later. For example, I'm using firefox on my PC but have to leave by some reason, and when I'm out, I want continue to see the tabs I was browsing, but they just don't appear on my phone, and after a few hours I finally see them.