modify

/* Written by Kaz Crowe */
/* UltimateTouchpad.cs */
// [Previous imports remain the same...]

[ExecuteInEditTime]
#if ENABLE_INPUT_SYSTEM
public class UltimateTouchpad : OnScreenControl, IPointerDownHandler, IDragHandler, IPointerUpHandler
#else
public class UltimateTouchpad : MonoBehaviour, IPointerDownHandler, IDragHandler, IPointerUpHandler
#endif
{
    // [Previous code remains the same until Start method...]

    void Start ()
    {
        // If the game is not running then return.
        if( !Application.isPlaying )
            return;

        // Configure the sensitivities.
        _xSensitivity = xSensitivity * screenWidthReference;
        _ySensitivity = ySensitivity * screenWidthReference;

        // If the parent canvas is null...
        if( ParentCanvas == null )
        {
            // Then try to get the parent canvas component.
            UpdateParentCanvas();

            // If it is still null, then log a error and return.
            if( ParentCanvas == null )
            {
                Debug.LogError( "Ultimate Touchpad\nThis component is not with a Canvas object. Disabling this component to avoid errors." );
                enabled = false;
                return;
            }
        }

        // If the parent canvas does not have a screen size updater, then add it.
        if( !ParentCanvas.GetComponent<UltimateTouchpadScreenSizeUpdater>() )
            ParentCanvas.gameObject.AddComponent<UltimateTouchpadScreenSizeUpdater>();

        // Update the size and placement of the touchpad.
        UpdateTouchpadPositioning();

        // Modified: If input image exists, make it always visible with the input color
        if( displayInput && inputImage != null )
        {
            inputImage.color = inputColor;
        }

        // [Rest of the Start method remains the same...]
    }

    public void OnPointerDown ( PointerEventData touchInfo )
    {
        // [Previous code remains the same...]

        // Modified: Removed the input image visibility change since we want it always visible

        // [Rest of the method remains the same...]
    }

    public void OnPointerUp ( PointerEventData touchInfo )
    {
        // If the input is not active, then return.
        if( !inputActive )
            return;

        // Reset state and _pointerId to default.
        inputActive = false;

        // Reset the horizontal and vertical values.
        horizontalValue = 0.0f;
        verticalValue = 0.0f;

        #if ENABLE_INPUT_SYSTEM
        SendValueToControl( new Vector2( horizontalValue, verticalValue ) );
        #endif

        // Modified: Instead of hiding the input image, return it to its default position
        if( displayInput && inputImage != null )
        {
            inputImage.rectTransform.localPosition = Vector3.zero;
        }

        // [Rest of the method remains the same...]
    }

    void UpdateTouchPad ()
    {
        // [Previous code remains the same until input image handling...]

        // Modified: Update input image position while dragging, but keep it visible
        if( displayInput && inputImage != null )
        {
            Vector2 newPosition = ( Vector2 )baseTrans.InverseTransformPoint( ParentCanvas.transform.TransformPoint( currentPosition / ParentCanvas.scaleFactor ) ) - ( canvasRectTrans.sizeDelta / 2 );
            inputImage.rectTransform.localPosition = newPosition;
        }
    }

    void ResetTouchpad ()
    {
        // Reset state and _pointerId to default.
        inputActive = false;

        // Reset the horizontal and vertical values.
        horizontalValue = 0.0f;
        verticalValue = 0.0f;

        #if ENABLE_INPUT_SYSTEM
        SendValueToControl( new Vector2( horizontalValue, verticalValue ) );
        #endif

        // Modified: Instead of hiding the input image, return it to its default position
        if( displayInput && inputImage != null )
        {
            inputImage.rectTransform.localPosition = Vector3.zero;
        }

        // [Rest of the method remains the same...]
    }

    // [Rest of the class remains the same...]
}