It seems to be badly broken, yes. (It works for me, if I click like a zillion times on the search bar and type on the keyboard at the same time.)
I'm using the Snap version on Ubuntu 18.04 and don't have these issues anymore, tho I had them in the past. But back then the workaround with clicking on "settings" was easy. Open the drop down menu by clicking on it, and then use arrow keys and enter to select what you need.