DJ Sona's music starts with all layers of music

Some time ago there was a bug with DJ Sona's voice lines but it seems to be fixed. However after the latest patch I noticed that DJ Sona's music sounds different. You used to have to add layers of music by using basic abilities and ultimate but now it sounds like DJ Sona starts with more layers of music without using her abilities. Also music used to lose it's layers after Sona's death but it seems like it doesn't anymore and just keeps playing. I'm not sure if this is an actual issue but I play Sona quite often and after latest patch I simply noticed that her music is different. Could someone look at it?