Beginner question Pipedrive:

In the sidebar, for both Companies and Persons, there is the option to turn on/off making fields always visible in the sidebar. In the sidebar itself there is an option to collapse or expand. However, the two dont seem to match. As soon as there is data in a field, that field is always visible, collapsed or expanded, turning always visible on or off. The on/off, connected to the collapsed/expanded view only seems to work for empty fields. Am I missing something here?

I've got quite a few fields that have data in them but that I dont want to show by default, only if someone is interested in them. But now I'm stuck with a long list of data that not everyone wants to see all the time. Any tips on how to achieve this? 

Thank you. Willem Jan.