Why does the screen scale up & overflow in presentation mode ( on actual size) even with low resolution mode in the desktop app?

I have tried with the following setups

  • the prototype screen ratio is the same as the screen ratio
  • A. the prototype resolution is the same as the screen from which I’m designing or
  • B. the prototype resolution is smaller than screen resolution which I’m designing from

But in both case in presentation mode the prototype was scaled up & were overflowed in the screen. & couldn’t scroll.

What is the solution to match the prototype resolution in presentation mode?