Cloaked spies "drawn"

As much as I like this as Sniper, I believe it's not fair for the Spies. Also, I don't really would classify it as a bug, but I guess it's the most aproximate thing.

When playing as Sniper, you can "know" the position of a cloaked Spy nearby thanks to the laser dot, because even though the Spy is invisible, the laser still "hits" him. You can then know where the Spy is and shot him by dot size comparision - you crouch, and aim perpendicularly to the ground, like "scanning" the area; if the dot suddenly appears bigger than it should, the Spy is there. It's not much and not really important, but enough if you know that a Spy is wandering around in a specific room or area.

Listed it as a bug because I would assume that if you can't see the Spy, the laser dot shouldn't be able to hit him either.