Just got this and I love it, but my fightstick's directions aren't being recognized. I suppose it's related to KhakiMage's comment on the D-Pad, as it's definitely emulating a d-pad. Would love to get a fix!
I've been looking into a more permanent fix for ps5 controllers, but for now, If your stick has a way to switch between the stick sending either left stick or dpad inputs, I'd try switching between them, if that doesn't work (I don't think it will if it's a ps5 controller issue), try switching your stick between dinput and xinput modes. If that also doesn't work, try running the game through steam as a non-steam game, with their controller compatibility settings turned on. Let me know if any of these solve your issue!