With the redesign of the new zebra, a part of what used to be behind the ‘+’ is now shifted to the ‘right click’ menu.
This is not obvious to all (as postings on this forum shows), and I imagine it brings on an extra hurdle for using the website on e.g. an Android tablet. (Needing to support right-click is more difficult then clicking on a button within the zebra).
Off course, the previously used button (’+’) cannot be used, as it would be confusing. But what about a button with the ‘>>’ sign? Made a mockup here, just to get an idea how it would look like.