This is the new design for the Firefox address bar. It's a permanent change. The browser.urlbar.update1 preference is only there for testing purposes and will eventually be removed from Firefox.

If you want to permanently remove the resizing of the address bar, you will need to resort to userChrome modifications.

I've created some userChrome.css code to address the annoying growing and shrinking of the address bar, if that's a feature that you don't like. You can download the code from here.

If you've never used userChrome styling modifications before, refer to How to Create a userChrome.css File for more information.

Hope this helps.

NOTE: The code in the link must be located at the top of the file to work properly if your userChrome.css file already has content in it.

please give us the option to turn the resizing off, it ruins the experience.

It looks quite big (actually much to big) in the current Nightly build.

This code in userChrome.css works for me in the current Firefox Nightly build. Some of the code is in the HTML namespace, so you either need to place it above the @namespace line or use a @import url("urlbar.css"); rule to import a file with this code.

#urlbar[breakout], #urlbar[breakout][breakout-extend] { --urlbar-height: 28px !important; --urlbar-toolbar-height: 30px !important; width: 100% !important; top: calc((var(--urlbar-toolbar-height) - var(--urlbar-height)) / 2) !important; left: 0 !important; } #urlbar[breakout][breakout-extend] > #urlbar-input-container, #urlbar-input-container { height: var(--urlbar-height) !important; width: 100% !important; padding-block: unset !important; padding-inline: unset !important; transition: none !important; } #urlbar[breakout][breakout-extend] > #urlbar-background { animation: none !important; }

https://dxr.mozilla.org/mozilla-central/source/browser/themes/shared/urlbar-searchbar.inc.css

See also:

• https://www.userchrome.org/what-is-userchrome-css.html
• https://www.userchrome.org/how-create-userchrome-css.html

In Firefox 69 and later you need to set this pref to true on the about:config page to enable userChrome.css and userContent.css in the chrome folder.

• toolkit.legacyUserProfileCustomizations.stylesheets = true

See:

• https://www.userchrome.org/firefox-changes-userchrome-css.html

this is the best i could do: 1-go to about:config page and set "toolkit.legacyUserProfileCustomizations.stylesheets" to true 2-Go to "about:support" find "profile folder" click on "open folder" 3-create new folder with the name "chrome" and open it 4-create a note pad file (text document) named"userChrome.css" (changing the file extension and the upper case C are important) 5- copy below in "userChrome.css" (i did tweak the script from Wesley Branton) 6- close and reopen FF / Nightly

/* REMOVE MEGABAR START

* VERSION 1.0.3
* RELEASE NOTES: http://userchrome.wesleybranton.com/notes/megabar */

@-moz-document url(chrome://browser/content/browser.xhtml) {

   #urlbar[breakout][breakout-extend] > #urlbar-input-container,
   #urlbar-input-container {
       height: 25px !important;
       padding-block: 0px !important;
       padding-inline: 0px !important;
       transition: none !important;
       border-radius: var(--toolbarbutton-border-radius) !important;
   }

   #urlbar[breakout][breakout-extend] {
       top: calc((var(--urlbar-toolbar-height) - 26px) / 2) !important;
       left: 0 !important;
       width: 100% !important;
   }
   
   #urlbar[breakout][breakout-extend] > #urlbar-background {
       box-shadow: 0 1px 4px rgba(0,0,0,.05) !important;
   }

   #urlbar[breakout][breakout-extend] > #urlbar-input-container {
       border: 1px solid var(--toolbar-field-focus-border-color) !important;
   }

   #urlbar[breakout][breakout-extend][open] > #urlbar-input-container {
       border-bottom: 1px solid transparent !important;
       border-radius: var(--toolbarbutton-border-radius) var(--toolbarbutton-border-radius) 0 0 !important;
   }

} /* REMOVE MEGABAR END */

Speacial thanks to Wesley Branton and cor-el

I really don't like it as it steals another 2pixels (YES, 10%) of the already tiny bookmark buttons. Feels like I need to click something from under a ledge.

Please give us an option to disable it.

Please give us an option to disable it.

some fixes

/* REMOVE MEGABAR START

• VERSION 1.0.4
• RELEASE NOTES: http://userchrome.wesleybranton.com/notes/megabar */

@-moz-document url(chrome://browser/content/browser.xhtml) {

  #urlbar[breakout][breakout-extend] > #urlbar-input-container,
  #urlbar-input-container {
      height: 25px !important;
      padding-block: 0px !important;
      padding-inline: 0px !important;
      transition: none !important;
      border-radius: var(--toolbarbutton-border-radius) !important;
  }

  #urlbar[breakout][breakout-extend] {
      top: calc((var(--urlbar-toolbar-height) - 26px) / 2) !important;
      left: 0 !important;
      width: 100% !important;
  }
  
  #urlbar[breakout][breakout-extend] > #urlbar-background {
      box-shadow: 0 1px 4px rgba(0,0,0,.05) !important;
  }

  #urlbar[breakout][breakout-extend] > #urlbar-input-container {
      border: 1px solid rgba(0,0,0,.05) !important;
  }

  #urlbar[breakout][breakout-extend][open] > #urlbar-input-container {
      border-bottom: 1px solid transparent !important;
      border-radius: var(--toolbarbutton-border-radius) var(--toolbarbutton-border-radius) 0 0 !important;
  }

Speaking of Chrome... I think I'll just switch to the browser until this annoying feature is eliminated from future updates.

Please give back a configuration option for the (awful) giant urlbar.

I came here to report this bug as well, it needs to be addressed and removable.

Odd how such a feature cannot be disabled from config ... does Mozilla want to lose users? I shouldn't have to know programming to disable it. It is so annoying that, like others, I'll just move over to Chrome. I guess that's what Firefox wants us to do anyway ... move over to Chrome.

Honestly this "feature" is so terrible that it does make me want to move to a different browser and I've been on FF since the very beginning. Pretty pretty please with sugar on top add a tiny little checkbox somewhere to turn this... thing... off! Thanks!

Horrible, just horrible!