New Rise Feature: Sidebar Visibility

I love the fact that you can set the sidebar to open or closed (or not have one at all).

We are experiencing a problem though - once you get past the first screen there is no way to toggle between open or closed. If you want to access the sidebar, you must have it open on the first screen and then scroll past, and vice versa if you want it hidden. The hamburger button disappears after the first screen. This makes it difficult when reaching a point later in the course and possibly wanting to toggle the sidebar visibility.

I am not sure if this is the expected behaviour or if it may be a bug? But can the hamburger button remain available past the first page so we can toggle the sidebar later without having to scroll back to the very first page of the course, please?
 

Thanking you

Marcia