Why my code is behaving strangely?

Question

https://sololearn.com/compiler-playground/WpcagVoCUwVO/?ref=app
In the first song, When I play it and listen it for a while. Then when i click on pause button(Not MasterPlay... I am referring to font awesome..) it starts from zero.
BUT in second song. It starts from the point I PAUSED it. Why this strange behaviour is happening?