This is what The Guardian suffers from. It is slightly less-bad than it used to be, scrolling through an article on mobile would send you jumping around as new

This is what The Guardian suffers from. It is slightly less-bad than it used to be, scrolling through an article on mobile would send you jumping around as new adverts spawned where you were reading - for the time being it appears to be within the first ~N seconds of load. Steam suffers from it too - while clicking through your "Discovery Queue" it often displays a link to a video of someone streaming the game it recommended. Not that it matters now, Discovery Queue is hopelessly broken for me - only shows some very low-quality games i'm not interested in