I set some stop times for some songs in iTunes, and it always works fine in iTunes. However, when I play those same songs on my iPhone (using iOS10 now), sometimes it will stop when it is supposed to, and sometimes it won't. This issue seems most apparent in playlists, and even moreso when I have shuffle on. If I flick it off and then select the song within the playlist, the song will stop when it is supposed to. Is this a bug, or...?