Editor Raycast Not Centered

When I use raycasts in my editor script, I notice they're pretty off-center.

I am using the current camera and not the main camera, and I'm not using the camera's transform's position and forward.

Does this have anything to do with the editor window not normally having the game at full screen or is it some other reason?

But mainly, how do I get proper, centered raycasts with my editor scripts?