Regarding the Presenting-slider.rsp file. It is nice that the program lets me know that there are breakpoints hidden behind the control panel on the right. But sliding the program to the left will not allow me to make the window bigger to see the hidden breakpoint.
I use a laptop with a 1366x768 display resolution, Windows 10.

You should be able to slide the app to the left and then click and drag the app to expand on the right. Just keep repeating the process until it comes into view. If that does not work, you will need a larger display in order to see those breakpoints. That is the only way to see them at this time.

We are working on a new feature to address that and hope to have it released soon.