Honda civic 2006 - i shift

Hello All, 

I hope you are well. I am currently the new possessor of a Honda civic 2006 1.8 140 ch i shift. 

I have a few question. I don't know if you will be able to answer me.  I drive on automatic with this one. When I press hard the accelerator it goes to 50km/h then it accelerate but slowly is that a normal behaviour ?    

Another question is that when I have to stopt at a red light that is uphill. Then restart when the headlight is green I switch from brake to accelerator and the car goes backwards a little bit during those second that I switch pedals is that normal has well ?

Thank you for your answers.