browser.newtabpage.activity-stream.improvesearch.handoffToAwesomebar = true and/or
browser.privatebrowsing.searchUI = true.
- Go to
about:newtab or a private new tab and type into the search box.
- Try to select a different search engine.
Searching from activity stream prepends the search term with
@<default engine> which effectively locks-in that engine and does not show one-click search icons like it did before. The only way to change search engine is to remove the
@ term at the beginning which is very clumsy. This is a regression and UX inconsistency, there is no apparent reason why initiating search from activity stream should make it more difficult to use a non-default search engine.
While other browsers are making it easier to use a different search engine in private windows (Vivaldi, Brave) (Bug 1411340), Firefox is making it harder.