View starts off lower than expected

I ran into a problem where the view starts off lower than what I wanted. However, by clicking on the side menu icon(the hamburger icon), it puts the view and the contents back into the right spot? I used GeometryReader ->Zstack(alignment: .topLeading). Im not sure where I can pinpoint the problem. My side menu is a slider menu, and has a fading effect that blur the background when it is open.