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I've searched for answers. I tried the About:config and changing some settings to false and others to true as suggested (e.g. browser.search.context.loadInBackground), etc., and of course I have the option chosen under settings.

This is a new computer. My old computer would switch to the new tab when I right click it, but this new one won't.

Any latest fixes?

Hi folks, I had a problem with this back in June 2021 when my previously black background to the menu bar (bookmarks etc) changed to a washed out grey. Chris Ilias and dbben both replied, and Chris sent me a video guide on how to install Photon Colours, which fixed the problem, thanks. However, today the same problem has re-occurred - ie grey background. Unfortunately, when I checked in the Themes menu I found that Photon Colours is no longer there. Grateful if you could tell me if there is a new fix for this so that I can re-instigate the black background to the toolbar. Many thanks Chris

Is there a way to permanently disable red underlining from Firefox spell check? This has only started occurring since an update to Firefox 110 (now on 112), but there seems to be no way to make it go away. I've unchecked the spelling box in preferences, and killed off things in about:config:

extensions.spellcheck.inline.max-misspellings 0 layout.spellcheckDefault 0 services.sync.prefs.sync.layout.spellcheckDefault false services.sync.prefs.sync.spellchecker.dictionary false

I'm using Mac Monterey, and have the global spell check turned off for that. This seems to be a problem specific to Firefox, as it doesn't happen in Chrome (spellcheck off) or Safari. I'd like to remove this entirely, since it's distracting to have it second guessing me whenever I'm typing. The main reason I use Firefox is that it gives me the ability to control many things, particularly in combination with UBlock, but I'm unable to make any progress in removing this persistent work disruption.

I've just switched to firefox from brave, and theres no button on twitch to enable picture in picture. Using the keyboard shortcut (cmd+option+shift+]) works, but I'd much rather click something on the screen. On brave there used to be a picture in picture button alongside settings, theatre mode, and fullscreen buttons, but on firefox this has been replaced by a clip button. There's no option for it if I right click (this works on youtube), and no option in the address bar for either twitch or youtube. I've tried disabling all my extensions and lowering protections but nothing seems to work.

already found this same topic, but was archived Had exactly the same problem for weeks now (too lazy to come to the forum, but so exasperated that I'm here now)

I run W10 21H2 up to date, and Thunderbird 102.1.2 I do exactly what is described in cited post which used to work ..(can't say when it stops working) with the same result "BLACK" (only sometimes a quick "flickering" with the chosen color, but "Black is Back

With the new v85 of Firefox... for Microsoft Print to PDF...

the defaults for print headers & footers has changed and is no longer available to edit or even view. It seems as though my settings remain in place for other printing options like my physical printer but even there the options are not editable or viewable.

There used to be a "page setup" option but I have not be able to find this anywhere anymore.

• Bulleted list itemhttps://support.mozilla.org/en-US/kb/how-print-web-pages-firefox#w_changing-the-page-setup

I'm assuming that it has to do with the bug fix for pdf printing but doesn't seem that it should be an intended outcome of the fix.

• https://www.mozilla.org/en-US/firefox/85.0.1/releasenotes/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1689789

Any work arounds anyone knows about or has found?

Embedded videos missing in Firefox but show up in Microsoft Edge. How to fix it?

Example: https://scheerpost.com/2024/03/09/you-are-betraying-your-ancestors-a-message-to-joe-biden-from-the-graveyard-where-his-ancestors-are-buried/

I have recently updated to Firefox 106 on two Arch Linux systems. One of them has Firefox View enabled and working by default, another does not. I looked around and tried some options in about:config to enable it, however it did not work and I reverted the changes. I would like to enable Firefox View on this browser as well, and I would like to know how to enable it.

How can I completely remove the tab bar and regain 3/4 of an inch of screen space. It would be nice if Mozilla would just have a on/off button for it. I've tried creating a folder called Chrome within my Firefox Profile folder. I then created a text file within that folder and named it userChrome.css. I put this string in the text file #tabbrowser-tabs { visibility: collapse !important; } This did not work, does anyone know the best method for getting rid of the annoying tab bar?

Thank you

I'm using freshly-downloaded Firefox version 102.2 on a brand new laptop (Windows 11 Pro version 21H2), and every single extension is showing a "Installation aborted because the add-on appears to be corrupt" message when I try to install. I have tried checking for updates, quitting and reopening firefox, restarting my computer, refreshing firefox, uninstalling and reinstalling firefox, as well as any and all combinations of those. I've scoured these message boards and nothing is working for me. Please help!

My preferences > general > files & attachments settings all show "use LibreOffice Writer" (free Word substitute, interchangeable with Word). Instead i get a full-screen "reply" template (presumably to be used to reply to the email --not at all what i want!

There is no userChrome.css in my profile.

If it needs to be created, where do I create it?

Yes, I searched for help. What I found was about userChrome.css to solve specific problems, but not what to do if it doesn't exist. Is userChrome still supported?

Thank you! Mark.

Made a mistake by changing user_pref("layout.css.devPixelsPerPx" from I think - 0.5 to +0.5 as incoming emails font was miniscule, but made nor difference... so thought it may be a font size, so changed to 12.... Now ginormous and unreadable. Searched through pages here for an answer and got to the prefs.js folder to find this file but it is not there.... I searched with notepad edit search for "layout" but no luck. Any ideas anyone? I tried adding the line user_pref("layout.css.devPixelsPerPx", "1.5"); whilst TB was closed and then opened TB but had made no difference.. :-( Any ideas anyone? TIA Graham

Hi, I tried following this guide:

https://blog.mozilla.org/addons/2020/09/29/expanded-extension-support-in-firefox-for-android-nightly/

For these add-ons: https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/ https://addons.mozilla.org/en-US/firefox/addon/bypass-paywalls-clean/ https://addons.mozilla.org/en-US/firefox/addon/kindle-it/

However for all add-ons, I get the error: "Failed to install *addon name*"

Any help?

Please explain how to disable total messages count to the right of every folder and subfolder? It's not about unread messages. Can't find this option, however I had enabled it earlier...

This again!

This was resolved about a year ago; now the problem is back, as of updating to Firefox 113.0.1 this evening.

Initially post-update the close tab button was in a weird, random place on the tab bar. I have adjusted the margins to put the button back where it's supposed to be!

I changed :

.tabbrowser-tab .tab-close-button {
  opacity: 0;
  margin-left: -4.5px !important;
  margin-right: 2px !important;
}

to:

.tabbrowser-tab .tab-close-button {
  opacity: 0;
  margin-left: -4.5px !important;
  margin-right: 35px !important;
}

to move the button back onto the left. That may seem like a drastic change but that's the lowest value I could find which produced the result I want.

However, it's not quite the result I want! As of updating to 113.0.1, the tab title itself now disappears altogether on hover.

I have tried to correct this in CSS using the .tab-text and .tab-label attributes, but without any luck so far.

Can anybody help me with this, before I'm forced to downgrade to Firefox 112?

Better yet... how about we just make this an option in Settings, as it should be?!