Nah, I play in PS4 mode. It's a mystery, damn.
For reference's sake, I marathon SFIV/V, Sign, Skullgirls, ETC all the time. Even the Revelator demo didn't give me this issue.
The PCB is ripped from an MKX pad, this guy
http://www.amazon.com/Mortal-Kombat-Fight-Pad-PlayStation-4/dp/B00TKTHZB4?ie=UTF8&keywords=mkx pad&qid=1465350187&ref_=sr_1_1_twi_gam_2&sr=8-1