There is a problem with the use Joy-Con 2 in mouse mode. While pressing Zr in controller mode triggers a shot every time, pressing R in mouse mode results in a delayed or inconsistent response. The controller itself is fully functional—I demonstrated this using the system's built-in debugger.
*I’d also like to mention the gyro controls here: everything works as intended in handheld mode, but gyro aiming is very wonky when using the Pro Controller—please test this.