[arcfor]

I now understand that this app is branded as Firefox Search. However, I find it very suspicious that, at least for me, it only allows Google, even though my default search engine is DuckDuckGo. It also ignores Firefox's data clearing, as you acknowledged.

I think it was automatically enabled on my phone because I explicitly disabled the Google app (my only other search app) in my App Settings.

I updated the page to refer to it as "Firefox's Google Search app". A fair name, considering its search engine options.

[Niten]

It uses whatever search engine you have configured in Firefox. When I tried it a minute ago on my Nexus, this defaulted to Yahoo.

This is unequivocally Mozilla code you're observing. Here's what adb logcat shows when that activity starts:

    I/ActivityManager(29188): START u0 {act=android.intent.action.ASSIST flg=0x13000000 cmp=org.mozilla.firefox/org.mozilla.search.SearchActivity (has extras)}

[arcfor]

Not for me. Mine only allows Google. Maybe because I'm using a custom default search engine? If so, it should just use my custom one, and should obviously give me a choice regardless.

[Niten]

This may also be a bug in the Firefox app: I've just observed that when I change my default search engine in Firefox, that setting isn't necessarily reflected in the search intent handler until after I force stop Firefox.

Either way, to reiterate, it's definitely Firefox you're seeing here. If you don't like the way it behaves, I recommend following the other suggestions on this thread to file a bug report with Mozilla.

[chimeracoder]

This is a bug in Firefox. I noticed it when 36 was first refused, and I'm pretty sure there's an open ticket about it.

Change your default search engine to something else and back again, and you'll notice that the widget updates.