Player 2 can't join with Start button

[streletzky]

I have an arcade with 2 sets of player controls, each with a joystick and 8 buttons. On the main RetroPie menu, the start button works for both player 1 and 2 controls. When I enter a game that requires player 2 to press start to join in the lobby (like the Simpson's arcade game, etc), it doesn't recognize player 2 pressing start.

If I attempt to remap the controls of player 2, then the game stops recognizing the start button for player 1. So it seems that the game ignores the start button press of the player controls that were reconfigured the longest time ago.

All other buttons, including select/add coin work for both players in all games that I am able to test.

Any ideas on what could be causing this?

Nevermind, wiring issue that I didn't see was causing it