It has been behaving rather oddly for me. Shortly after my post a few weeks ago (1/26/16), it started working fine. For 2 weeks there was no issue, then it started crashing again, which prompted my last post (2/13/16). For the past week or so, it's been hit or miss. More often than not, updating bookmarks via the app (Windows 10 desktop) doesn't push to LDS.org, which means that they don't sync with my other devices either (sometimes it crashes, sometimes it doesn't) . However, if I update via either the website or one of my devices, it syncs.
CIAO!
Ed Nielsen