Themes breaking up, except default one

Edwin, See my post two lines higher than yours. I don’t know if you use More Tags a lot – but that was my problem.

I’ll try. I just installed everything, so I’m not sure if that would be it.

(edit: Nope, not working for me)

In my case it was solved by removing the sociable plugin. Trying to re-add it now and see what happens.

With re-adding the plugin now it keeps working, although the plugin looks ugly.

Looks like you fixed it. But did you really mean to have a different theme when one clicks on a post in your home page with category FEEDS like this one – https://www.stipvoorstip.nl/blog/index.php/site/anti_vandalisme_boom_gesloopt/