I finally updated my Matriarch to the latest firmware (1.3.0) and it seems that the pitch mod assign switch no longer functions as it's supposed to. No matter what position the switch is in, all four oscillators get pitch modulation from the mod wheel. (I've tested this by individually turning each oscillator up and down in the mixer.)
At the same time, the pitch mod assign switch seems to be doing something: when I put the Matriarch in drone mode, turn up all four oscillators, and turn up the mod wheel, there is a change in tonality as I flip through the three positions of the switch.
Has anyone else encountered this? Any known fixes / obvious things I'm missing here?