Camera Smooth - Player moves little bit back when jump

Hello,

I'm facing a problem when I'm using smoothing on my camera.

When my character jumps, he seems to come back a little before performing the jump animation. I have already checked the animations and they all seem to be right, besides having tried various soft scripts. In addition to trying to change the method of update (Update, FixedUpdate & LateUpdate).

Everything seems to work that I leave the smoothing value down.

 void FixedUpdate()
     {
 
         // if the is following option is activated.
         if (isFollowing)
         {
             var velocityX = velocity.x * Time.deltaTime;
             var velocityY = velocity.y * Time.deltaTime;
 
             float posX = Mathf.SmoothDamp(transform.position.x, player.transform.position.x + XOffset, ref velocityX, smoothTimeX);
             float posY = Mathf.SmoothDamp(transform.position.y, player.transform.position.y + YOffset, ref velocityY, smoothTimeY);
             transform.position = new Vector3(posX, posY, transform.position.z);
 
         }
         // Set the camera bounds.
         if (bounds)
         {
             transform.position = new Vector3(Mathf.Clamp(transform.position.x, minCamPos.x, maxCamPos.x),
                                               Mathf.Clamp(transform.position.y, minCamPos.y, maxCamPos.y),
                                               Mathf.Clamp(transform.position.z, minCamPos.z, maxCamPos.z));
 
         }
 
     }

Please see the video below:

See here!

What could be happening?

Any help is welcome!