Until the latest update (I'm guessing v 34.x), the search bar's icon would show you the currently selected default search engine. I understand that Google is no longer paying to be the default... That I was expecting and isn't my issue.... I used to be able to use Ctrl+Up and Ctrl+Down to change the default search engine (maybe default isn't the right term... but it changed what was used when I hit <Enter> or <Alt+Enter>). Now, there's no support for this as far as I can tell. This shortcut page (https://support.mozilla.org/en-US/kb/keyboard-shortcuts-perform-firefox-tasks-quickly) still references it, but it doesn't seem to work. As a sort of side note: Where typically, middle clicking on anything opens stuff up in a new tab, that behavior does not seem to carry over when clicking one of the non-default options in the search context menu. I've always appreciated that Firefox was very consistent about respecting the middle click as "do this in a new tab" what seems EVERYWHERE.