I have an 8bitdo Pro 2 wired controller fresh out of the box. When I tried testing this game with it, I found that the Left Bumper was being read as Left Trigger by the game. I checked the firmware of the controller, factory reset it, it still happens.
I tested two different games, and the left bumper works fine. I did the button check on both the controller's application and in steam, and left bumper reads as left bumper.

However, for this game specifically, it seems to read Left Bumper as Left Trigger. It also reads Left Trigger as Left Trigger. All the other buttons work. Do you guys have any ideas on what is going on here?