Known issueFixUpdated · 5 replies on Steam
Never Sort by Color: [Bug/Suggestion] Your Game Shouldn't Require a Mousewheel (Workarounds)
Short answer
Suggested fix (unconfirmed): Open the controls menu while you are in-game to access the rebinding options. Rebind the mousewheel actions to alternative keys.
The problem
Not everybody has a mousewheel, including many laptops whose gestures do not work in game mode, as well as Logitech Trackman and several others. Is this something that will be fixed in the future?
Did this work for you?
Source: original Steam Community discussion. Quotes are shortened; all credit goes to the posters.