Odd touch input problem

As the title says, I'm having an odd reaction when I touch the movement buttons in my game. When I call the movement function with keyboard input, it creates a new Vector3 with the value 1,0,0. When I press down the keyboard button, it smoothly moves the player. However, calling the same function with a touch button causes the player to jump forward a unit, then start moving normally. If I change the new Vector3 to Vector3.right (which has the same value as the Vector3 I created), it works. Here is my code so far :

Touch input example:

 this.guiTexture.texture = buttonDown;
         touching = true;
         PMain.moveDirection = Vector3.right;
         PMain.moveDirection *= 3;
         Player.transform.localScale = new Vector3 (Player.transform.localScale.x, 1, Player.transform.localScale.z);
         if(touching) {
         PMain.GetComponent<CharacterController>().SimpleMove(transform.TransformDirection(Vector3.right) * 3);
         }
         else {
             PMain.moveDirection = Vector3.zero;
         }

Keyboard Input example:

 if(cc.isGrounded) {
         if(Input.GetButtonDown("Right")) {
             moveDirection = Vector3.right;
             moveDirection *= moveSpeed;
             this.transform.localScale = new Vector3 (transform.localScale.x, yScale, transform.localScale.z);
             
         }
         if(Input.GetButtonDown("Left")) {
             moveDirection = Vector3.left;
             moveDirection *= moveSpeed;
             this.transform.localScale = new Vector3 (transform.localScale.x, -yScale, transform.localScale.z);
             
 moveDirection.y -= gravity * Time.deltaTime;
         cc.Move(moveDirection * Time.deltaTime);

The only real difference between the two is that I use simplemove in the touch input, while I use move in keyboard input. I was having problems with move when used with touch input. If anyone could help me, that would be much appreciated.