This feature was just added in the latest version of Firefox. Information about the new features of this release can be found in the release notes.

To display this feature, please do the following:

1. Go to about:config in Firefox
2. Click the I'll be careful button
3. Locate the browser.urlbar.unifiedcomplete boolean
4. Change the value to false

Note: You may need to restart Firefox for the changes to take effect.

That top item just describes what is going to happen if you press Enter or click the Go button:

• If there are no spaces in what you typed, usually that first row will show where "autofill" will take you if you press Enter or click Go.
• If there are spaces in what you typed, that first row will show what search engine will be used if you press Enter or click Go.

The preference change removes that informational line, but also disables adding search engine suggestions to that drop-down. If you later decide you want to have search engine suggestions displayed for the address bar, you could re-enable the preference and use a custom style rule to hide the top line, either in Stylish or a userChrome.css file. For example:

 @namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);  #PopupAutoCompleteRichResult richlistitem[type*="heuristic"] {    display:none !important;  }

[quote]This feature was just added in the latest version of Firefox. Information about the new features of this release can be found in the release notes./quote

Release notes are worthless if not supplied before or with updates (debain/ubuntu branch). The auto-update did not show me that it was changing the behavior of firefox, not did firefox note the behavior change on next start.

Right now, I have blocked firefox from installing on all equipment I control, since it is now questionable about the behavior change / breaks that are present. In the future, firefox will be sandboxed, until cleared. Had this problem with Microsoft in the past, now Firefox is appearing to be going down that same pattern.

This through madden was worst, when firefox disables key add-ons because of security change. Again BEFORE breaking it, tell us clearly so we can decide if the new feature will damage our use of the product.

Sorry for your frustration. Mozilla believes in providing the latest security and privacy features in our browser. This is why we recommend running the most up to date version of Firefox. However, Firefox will never require you to update and you can turn off automatic updates. To see how to do so, please refer to this Mozilla support article:

• Advanced panel - Accessibility, browsing, network, updates, and other advanced settings in Firefox

Please note that you can follow all changes to Firefox before they are released by looking at the beta/Nightly release notes.

I also noticed that you mentioned an issue with Firefox blocking your addons. This was probably disabled in the Firefox update because it is an unsigned addon. Firefox automatically disabled unsigned addons for user security.

Please refer to these Mozilla articles for more information about unsigned addons and how to enabled them:

• Add-on signing in Firefox
• De-coupling Reviews from Signing Unlisted Add-ons

Warning: The steps above may present a security risk. Please use with caution and at your own risk.

In regards to the addon, you should consider contacting the addon developer so that they can get their addon signed in the future.