Are you using an Android device or an iOS device? My understanding is that you are able to find local files on your device but it is painful without a consolidated list of PDF's. In addition, if you are using an Android device can you please share your Android OS version (Settings-> About Phone) with us.
I'm using an Android 4.1.1. It was just easier accessing the files before without going through the folders. Well, I considered putting all the files together in one folder but I had too many and it was already arranged by how I liked it.
Thanks for your request. We have made a note of the same and shall try to address the issue in a future update. We regret the inconvenience caused to you.