Why Does IsPointerOverGameObject Not Work with GUILayout Controls?

I have a game where holding the left mouse button makes the player float up into the air.

I've just added a GUI into the game.

I want to use an "Automatic Layout" using GUILayout, instead of a "Fixed Layout" using GUI.

This is because the "Automatic Layout" using GUILayout automatically sizes the GUI.

If I use a "Fixed Layout" using **GUI**, then I can use IsPointerOverGameObject to check if the mouse is over the GUI when clicking a control, so that the player will not float up into the air.

But if I use an "Automatic Layout" using **GUILayout**, IsPointerOverGameObject doesn't work, and the player will still float up into the air when clicking a control.

So why doesn't IsPointerOverGameObject work with the GUILayout's "Automatic Layout"?

And how can I achieve the same effect using GUILayout's "Automatic Layout"?

*Example of working code for a "Fixed Layout" using GUI:* if (Input.GetMouseButton(0)) { if (EventSystem.current.IsPointerOverGameObject()) {return;} // Detects clicks on the UI. rb.AddForce(Vector3.up * speed); // Thrust }