Oh, learned a lovely little Firefox+uBlock trick today. Apparently, if an HTML element has a shared name="…" value across multiple , they act as an accordion…opening one will close all the others. This drives me bonkers. If I wanted to close a element, I'd click on it and close it. So in your uBlock settings, you can add the following rule *##details[name]:remove-attr(name)  and it will remove the "name" attribute from all elements on every site and I never have to deal with accordioning again. 🎉