MouseWheel Trace Works in Debug Mode, not Test

Here is my code in its entirety. It won't trace when I Test Movi开发者_StackOverflow中文版e, but when I debug, it works fine.

import flash.events.*;

function scrollWheelHandler(e:MouseEvent){
    trace(e.delta);
}

stage.addEventListener(MouseEvent.MOUSE_WHEEL, scrollWheelHandler);

I hate flash. This is in a new project btw. wtf is going on?

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MouseWheel events don't register with Flash Player on Mac.

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There're some libraries to support failure of MouseWheel events on Mac.

SWFWheel is one of it and widely used by Japanese ActionScript communities. http://www.libspark.org/wiki/SWFWheel/en

This uses Javascript to detect MouseWheel events via ExternalInterface.