Here's a mildly annoying issue:

Took #94 from NPN to BWI today. At WAS, the new crew announced that all tickets would need to be out and ready for scanning, regardless of origination point. Of course, I opened my app to discover that the e-ticket that was showing earlier had changed to "paper ticket required." She was able to look me up by name, but her annoyance was very clear (as it was throughout all of her PA announcements on the trip as well...).

If Amtrak employees are going to go through the process of re-scanning tickets downline, then the app should darn well support that use case and not time out so quickly.