As the cue ball travels forward with draw it's sliding.
When your cue ball is spinning backwards (draw) on it's forward travel towards it's target, the cloth is constantly slowing down it's rotation.
When the forward movement of the sliding draw shot no longer has back spin/draw on it, it's at the transition point, where the cue ball begins it's Natural rotation, I call it '' unwinding''.
Any cue ball hit off center with draw, when it unwinds, will slightly change direction/right or left depending on cueing strike of the White ball.