So I just got lucky enough to make a supreme steel scissors blade, yay.
I go to combine it with a normal scissor blade active to make a whole, supreme pair of scissors as I have done with iron ones many times before. Only this time, no supreme scissors. Not even a little bit.
I replicated this with another rare scissor blade, tried the opposite way, thinking I might have done it wrong. Rare blade active. Still nothing.
Has something changed that I am unaware of, or is this (un)intended?