Downloaded music missing after 8.4 upgrade
After upgrading to iOS 8.4. opening the music app, and declining the Apple Music free trial, I noticed all of my previously downloaded iTunes Match music (about 60GB) was missing from my iPhone 6 plus. I could still see all my songs in the cloud, but they were not showing as downloaded, or available offline. I checked General --> Usage --> Manage Storage, and sure enough, the music library was only a few KB in size. However, strangely enough, my used and available storage numbers indicate that the previously downloaded music is still there, taking up space. The new music app just doesn't see it.
I tried toggling Music --> iCloud Music Library on and off a few times. I tried a regular reboot and a hard reboot. I tried deleting the music library through manage storage. None of these things helped. Last night, I tried re-downloading around 10GB of playlists for offline use. Now, the music library shows up as 10GB, but the previous 60GB of music is still on there taking up space, reducing the available storage shown remaining, but not usable by the new music app. The same exact thing happened on my iPad when I upgraded it as well, so I know it isn't a fluke; it's reproducible. Wiping the device and restoring it from backup is probably a valid solution, but I only like doing that as a last resort.
Just curious who else is having this bug, and maybe don't realize a chunk of their storage is now unusable.
iPhone 6 Plus, iOS 8.4