Take a picture of your screen

It does not. No screenshot is taken, saved or sent, on any screen. That one you can check yourself: watch what leaves your machine and you will not find a picture of your desktop in it.

What happens

Nothing. There is no image of your screen at any point in a task.

Worth knowing

It does keep the goal you typed, encrypted on your machine and synced to your account so your history follows you. What was on screen is never part of that.

True of every screen.