In-game music plays strange with Forge installed

[Fortnight]

This didn't produce an error or anything so I can't share, but what I have been experiencing is the in-game music (as in the default music) starts playing, but then other in-game tracks starts playing over the initial track. Doesn't happen in vanilla, but with Forge it starts becoming a problem as one  track doesn't naturally flow to the next as one track plays over the other before the first ends.

 

Looked in the forum and couldn't find if it's been mentioned, and it's nowhere to be found.

 

I'm sorry but this is all the info I can put up.

[LexManos]

I've had this reported once before, but I'm unable to reproduce.

If there is any way you could make like a screen capture with audio to illustrate.

But, I had ran into vanilla doing something similiar {playing two songs on the main menu instead of one}