You should be able to use the in-game calibration to tell it which buttons correspond to what. The auto-detection is frequently unreliable. (Up until 7.0, it registered entirely different buttons between the DualSense and DualSense Edge.)

But if it's like the DS Edge, there's a chance it won't work with the in-game calibration, at which point running through Steam (as a non-Steam app) with Steam Input enabled is one of a few ways to change how it is detected by FFXIV.


(From the title I thought the topic was about how controller input is scuffed in general, which is also true.)