Good News! The issues between all devices have been rectified! I believe it's the conflict of input values, even though a device might not be connected, but it might still affecting the other input due to the offset setting of that input. For example, Steering Wheel's input usually has a -0.5 offset from the original value. When nothing is connected, this value becomes -0.5, and I use the same axis number (Axis 1 that is) for steering wheel turning as well as the XBox controller's Left Thumbstick. Hence, when you start the game, you can see the wheel turned to one side instantly, even without any input. Same scenario goes to the LB/RB buttons not working when navigating between tabs, it is due to the conflict of other buttons of other devices.
I have now changed all buttons to use a unique keys and there are no overlap between all devices now. As this require a remapping of the input, I have also reset the key binding to default as soon as you start the game. If you have customized the key binding before, please redo again. A notice will tell you about that as soon as you launch the game.
Thanks for being patient and again, thanks for the person who reported the issue. I have got a few refunds in the past few days out of sudden and I have totally no clue what is happening. Now I believe it is due to the game not being playable at all.
A side note, on top of the G29 and ESX steering wheel, I will work with another player to add the support for T150 from Thrustmaster. I believe this could be the last model to be added. I am actually really curious on how many of you using steering wheel only to play the game, if you are okie to share, please leave it in the comment. Thanks.