Maximum music playing duration

I currently have rank 7 composing but I noticed that after G13, the silent long score scrolls (t32l1.rrr...) that used to last forever now only last a short while, whenever I play the score now it lasts less than one mabi day now. Anyone know what happened?

It was probably a bug in the mml interpretor that got patched. No scroll should be able to last forever.

well when I meant forever I mean like a very long time? Like literally real life hours but im sure it would have ended eventually