Searching in Calibre

[BananaTricky]

Apologies if this makes me sound like a dinosaur. In earlier versions of Calibre if I wanted to search for all books with a certain tag or author or whatever the search function would only show the results. Now, when I search Calibre still shows my entire library of nearly 12,000 books but just highlights the relevant books that match the search in green. The same is true if I am doing a quality check for missing author names or initials in the wrong format. Is this just a setting that I have to change and if so how? If not, is there a reason for the change or is it (she hopes) an unexpected by-product of one of the updates?

Thanks in advance.