I went to use Firefox View on my laptop to open a page I had just loaded on Firefox for iOS, but it wasn't there under Tab Pickup. I clicked refresh a couple times but it still didn't show. It wasn't until I clicked the menu button, clicked my account email, then Sync now did the page show up for viewing.
Clicking Firefox View should immediately initiate a sync, or at the very least, refreshing Firefox View should initiate a sync. Having to dive through menus to get a page to show up from another device takes away from the seamless experience.