I believe this is still in beta  so minor issues are to be expected. Lately  my phone has been unlocking itself when numerous notifications come in rapidly. It's not a huge deal  but it's kind of odd. There's also a bug where my notifications will break my lock screen when I click on them. The whole screen turns black  but after unlocking and re-locking  it's totally fine. Neither happen all the time  but often enough to where I kind of expect one or the other.
April 19 2017