iOS 8.3 unable to delete music via usage

The past few versions of iOS have all had certain bits in them to help get iTunes match a bit better. This last time I noticed features go missing. We all used to be able to delete music that was downloaded on our phones via general settings and the usage menu. Now apparently if you merely play a song it is cached to your phone and takes up space but is not actually loaded as a download on the phone. This leads us to our problem. I have 5 gigs of music on my phone now but since my phone doesnt actually know it's downloaded on there I can't delete it. Apple please fix this. Make the cached files show in usage again as the downloads did before. If it takes up space you should show it to me in usage... I shouldn't have to fight with my phone to make it work right.