Color sections started not displaying suddenly.

Hello, I’ve been building a page that uses WooCommerce (not relevant though, I think). I don’t think I did anything in particular that would cause color sections to disappear. Please see the site in private section.

All the content is there if you go edit pages like Galleria and Kauppa. However, the color sections don’t display when I visit the site. If I duplicate such color section, then one is displayed while visiting. If I delete one, then the page shows nothing. The weirdest problem I’ve seen… Also, there is a color section on the page Packraftit that contains a special heading. That doesn’t display, but the other sections on that page do. I haven’t touched the screen options of these sections.

So one solution is to duplicate every section that doesn’t display, but I don’t feel like doing that sine the problem makes no sense in the first place… The solution is probably something simple and I feel like a fool afterwards but I have no idea whats going on :D Help?