Thank you for 5 stars. Currently there is no other way to have both (one-click restore of the most recently closed tab and the list). As my primary use case is actually the one-click restore, I don't want to have the list on the left mouse button as there is no possible way to have the one-click restore on the right mouse button then. These are limitations of the API in Firefox. There is absolutely nothing I can do about this. Maybe this will change in the future and if this is the case, my addon will receive an update.