Tip: If your level contains elements that temporarily change the music to a global song (such as a P-Switch or a Star), that music will not stop playing after the intended end time if the music bypass setting is set to 00.
This is a pretty useful patch if you manage to run into this edge case - I imagine it would happen if you got the scales to work inside a vertical level.
The fix introduced by this update is one you're unlikely to notice (it took some pretty excessive ExAnimation before I managed to reproduce the bug) but it's very simple and there's no reason not to include it - after all, the more NMI time you have, the better.
I'd recommend this patch to anyone who uses the Mushroom Scales in a level. It's quite a small patch which can help in certain cases you could end up running into.