"Per Track Progress" not always remembered

[Citizen Snips]

I have a folder for which the "List Options" -> "List Position" and "Per Track Progress" are both checked, yet sometimes Poweramp fails to remember my progress within a specific track and will instead just play that track back from the start.  I haven't done enough testing to notice if this only occurs for tracks of a certain length, but is it possible this behavior is occurring due to some other setting that is colliding with the "List Position" and "Per Track Progress" both being checked, as opposed to being a bug?

[maxmp]

Poweramp writes the progress on pause. If you (or device or other battery saving/optimizer app) kill app when it’s playing, progress won’t be saved.