Touch controls creates problem to my code

Hello everyone, I'm using TouchPhase to register touch input on screen and everything works fine.

But for some reason, NOTHING in my code will be executed if I don't put a finger on the screen. (for example the automatic rigidbody.addforce won't be added before I touch the screen). So it seems that the "frames" or whatever doesn't get updated before the screen registers a touch input.

Video that explains everything and examples: Youtube Video presenting the problem (good to watch)

Example of using touch input in my code (this is for the jump function):

     void Update () {
         
         foreach(Touch touch in Input.touches){
         
         //touchingPlatform is a bool checking if player is grounded, jumpButton is the GUItexture used for the jump button
         if(touchingPlatform && touch.phase == TouchPhase.Stationary && jumpButton.HitTest (touch.position)){
             rigidbody.AddForce(jumpVelocity, ForceMode.VelocityChange);
             touchingPlatform = false;
         }
         }
     }