combo edit cset 2 offset

Pardon my ignorance, but I'm not sure what the combo cset2 feature is even suppose to do. Does it let you draw combos using 32 colors, or something?

It's supposed to offset the cset by the number you put in the cset2 slot for less cset switching.

It seems to work correctly in 461.

Yes, it seems to be working again.
It allows you to use 2 csets on a combo.
Many tilesets have all the sprites set to display correctly when viewed in cset 2 so being wrong can cause some serious problems.