I don't think the kind of people that can help you actually use this forum.
My advice - build your own player on top of OVP - you can acheive same functionality very easily - osmf is a gimmick.
I'd think that that should work as you expected. Please add your comment to the bug FM-952.
I've updated the bug with the details of a solution (also added to ExamplePlayer as a runnable example).
I'm working on a project and I did end up using the Proxy classes that were offered with the Example project. Although this does seem to work, it takes some time to pre-load multiple streams. In my case, my media player dynamically builds the media source and might change quite often, but in cases of too many videos, does not get updated with the new duration as it seems to be very slow. I was wondering if there is a way to speed this process up. I am using RTMP from a FMS server.