'Newspaper Say What Format, Lost Sidebar Scroll Hold'

Having gone live with a Newspaper based theme using the ‘Say What’ format I’ve lost the sidebar scroll hold, which is the only way I can describe it. Before when scrolling the home page the side bar would hold halfway nown the page, then restart with more info keeping the homepage fully populated with data, now I’m getting blanks in the sidebar whilst scrolling the homepage, the sidebar is not holding, anyone know what has changed? How I can Fix it?? https://drw.org.uk Thanks

Found it, Smart Side Bar! Oh well, learn something new everyday, I had disabled it 🙁