ImageTarget moves to camera position

When in edit mode the ImageTarget is the correct distance from the ARCamera on the Y axis. (SCREENSHOT LEFT) When in play mode, the ImageTarget position locks to the ARCamera position. (SCREENSHOT RIGHT)

This means that the models on the ImageTarget are always way too close to the ARCamera.

Is this normal behaviour? as it means everything would have to be scaled down to a tiny size in order to fit in front of the ARCamera.