I’m using Chrome on Windows 10, and mark as scroll past is active. When I open a text of a feed, it’s marking multiple behind it that I’ve not scrolled pass as read (some times up to 20 or more). It seems to do this mostly when the text opens longer than the whole page, whereas other sites that truncate their feeds to where the whole screen isn’t taken over by the story, it doesn’t seem to do this, if at all. I cannot be 100% on that.