No, it's not just broke. See Bugzilla Bug 1894910. Quote: "We have decided to remove the "open search page for a blank search" functionality for the separate search bar. Pressing enter in the search bar to open the search sites homepage and then star...
Of course "Pressing enter in the search bar to open the search sites homepage and then start a search, rather than typing the search and then pressing enter" may be not the best option for text search, but I used this functionality to do image search...
