Rotation on the Z axis not happening

Hi !

My problem is pretty simple, I have a plane, I have a camera, I want my camera's rotation to be the one's of the plane, it is currently tracking fine but it doesn't perform any rotation which is PRETTY weird since I basically set the cameras rotation to be the one's of the plane.

For some reason the only axis that isn't properly applied is the Z axis, but I have no clue as to why.

Pic of how it currently looks :

Pic of how it should look (after pausing and manually editing the camera's rotation Z axis) :

And my code :

     private void PlaceCamera()
     {
         this.transform.position = target.position + (-target.forward * distance) + (Vector3.up * height);
 
         // FREE CAMERA
         if (Input.GetMouseButton(1)) Orbit();
         else
         {
             transform.rotation = Quaternion.Lerp(this.transform.rotation, target.rotation, Time.deltaTime);
             transform.LookAt(target);
         }
     }

I already tried setting the rotation, the local rotation, but nothing helps !

Any thoughts ?