ObjectA freezes when ObjectB moves

Physics
1

For some reason I do not understand, my enemy objects stop moving around whenever the transform reference object moves/rotates. Here is the code on my enemy object:

    void FixedUpdate() {
        Vector3 playerPosition = player.transform.position;
        if (playerPosition.x == 0) {
            playerPosition.x += UnityEngine.Random.Range(-1, 1);
        }
        if (playerPosition.y == 0) {
            playerPosition.y += UnityEngine.Random.Range(-1, 1);
        }
        Vector3 direction = playerPosition - transform.position;
        direction = player.transform.InverseTransformDirection(direction);
        float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
        Vector2 velocity = new Vector2();
        velocity.x = Mathf.Cos(angle);
        velocity.y = Mathf.Sin(angle);
        gameObject.GetComponent<Rigidbody2D>().AddForce(velocity * moveSpeed);
    }

Any help is appreciated.

2

While it did not solve my problem exactly, I figure out a solution using the following:

    void FixedUpdate() {
        Vector3 playerPosition = player.transform.position;
        if (playerPosition.x == 0) {
            playerPosition.x += UnityEngine.Random.Range(-1, 1);
        }
        if (playerPosition.y == 0) {
            playerPosition.y += UnityEngine.Random.Range(-1, 1);
        }
        Vector3 direction = playerPosition - transform.position;
        float angleRad = Mathf.Atan2(direction.y, direction.x);
        Vector2 jiggleAmount = new Vector2(UnityEngine.Random.Range(-1000.0F, 1000.0F), UnityEngine.Random.Range(-1000.0F, 1000.0F));
        float jiggleDistance = UnityEngine.Random.Range(0.5F, 2.0F);
        float speedRandomOffset = UnityEngine.Random.Range(0.5F, 2.0F);
        float newMoveSpeed = moveSpeed * speedRandomOffset;
        float angleRadJiggle = Mathf.Atan2(jiggleAmount.x, jiggleAmount.y);
        Vector2 velocity = new Vector2();
        velocity.x = Mathf.Cos(angleRad) + (Mathf.Cos(angleRadJiggle) * jiggleDistance);
        velocity.y = Mathf.Sin(angleRad) + (Mathf.Sin(angleRadJiggle) * jiggleDistance);
        gameObject.GetComponent<Rigidbody2D>().AddForce(velocity * newMoveSpeed);
    }