Leaflet map scroll wheel zoom
Perhaps I'm wrong, but I think that options 'yes' and 'yes and center' in the Scrollwheel Zoom option are swapped. In this moment when I select 'yes and center' after scrolling map is only zoomed, and when I select 'yes' map is zoomed and moved to the point where mouse was hovered.
Also option 'no' do not disable scrollwheel zoom for me.