Input.GetKeyDown, Input.GetKeyUp, and mouse wheel do not work while playing in the editor.

The more I have used Unity, the more input stuff stops working when playing within the editor. They all work outside the editor, whether in the web player or stand-alone (Windows).

First thing I noticed not working was the mouse wheel. No matter how I tried to get the input, if I was running the game through the editor, it would never register.

Second, I noticed Input.IsKeyDown stopped working when playing within the editor. Oddly enough... it used to work a few days ago...

Lastly, I noticed that Input.IsKeyUp no longer works when playing within the editor.

The mouse wheel doesn't work in any project. I am about to test making a brand new project for testing IsKeyDown and IsKeyUp.