An empty snapshotView on iPhone 7/7plus : <p>My first question here:)  Recently I update my Xcode to 8, and the <code>resizableSnapshotView</code> method doesn't work properly on some simulators. The snapshotView works well on all testing devices with iOS9/10 and simulators under iPhone6s, but it is empty on iPhone7/7p simulators. I think 7/7p may need some authorities for accessing snapshot, but I have no idea what they are.</p>

<pre><code>let cell = self.tableView.cellForRow(at: IndexPath(row: 0, section: 0)) as! CalendarCell     
var topFrame = cell.frame
topFrame.origin.y = tableView.contentOffset.y
topFrame.size.height -= tableView.contentOffset.y
topSnapshotView = tableView.resizableSnapshotView(from: topFrame, afterScreenUpdates: false, withCapInsets: UIEdgeInsets.zero)
</code></pre>
