I'm seeing an intermittent issue where a FileTransfer download appears to do nothing at all. The file never downloads, the call returns without error, and neither the success or error callbacks are ever invoked. Additionally, the onprogress function on the FileTransfer instance is never called.
I've seen this problem on iOS (simulator and device), but I have not tried other devices yet.
I haven't been able to reduce it a clean testcase, but so far, the only pattern I've seen is that it only occurs when I request the download very shortly after creating a directory.