Present view: Justify frame to reduce frame jumping

If you are prototyping a tool pallet for instance and there are collapsible sections or drop downs, the frame can get bigger or smaller.
In Present view, this makes the frame jump up and down as Figma always keeps it centrally justified in the window.
This is very distracting for my customers and breaks the illusion of being in the product itself.
I want to be able to justify the frame to the top every time so that when the frame resizes, the bottom edge moves up and down and the entire frame doesn’t jump around. .