D-Pad on Dualshock3 doesn't work

[DropboxKenshiro]

So, I'm using Mesen got from AUR on my Manjaro Linux (Architect build), and I'm using my old Dualshock3 via kernel drivers and standard Bluetooth. It seems to work 100% fine in most applications, but for some reason Mesen recognizes all buttons, but D-Pad, and digital directions are quite important for most NES games. A bit of data now:

OS: Manjaro Linux
Mesen version: 0.9.9 (AUR build)
How to replicate: get your DS3, connect it to Linux via BT, then go to Input settings and try to set any mapping to a D-Pad Button. No effect.

It's not much more to talk about here.