Category only displays first 1-2 posts in Catch Everest (free)

Hello, I love the Catch Everest theme and am currently using the free version, updated to the latest version. One menu 'screen' I have set up displays posts from a specific category: http://theeschercycle.com/category/case-studies/ This used to work fine, but now doesn't. The problem is that as the user scrolls down, the text of the second post disappears as you get to viewing the end of the second post. I thought it might be a problem with codes in a particular post, but unpublishing the latest one results in the same problem, so I think it is theme-related. The first post displays fine. The second post begins to display fine. But then when the bottom of the second post appears on screen, the whole text of the second post disappears. Help! please. Thank you, Finn