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Firefox 140 - Now have issues with background colors in Sideview bookmarks

Hello all: Just downloaded version 140 and ran into an immediate "visual/appearance" problem with regard to the background color(s) of the sidebar bookmarks view. Many … (read more)

Hello all:

Just downloaded version 140 and ran into an immediate "visual/appearance" problem with regard to the background color(s) of the sidebar bookmarks view. Many themes now have totally dark sidebar colors and not readable (see screenshot image upload with this posting). I always have my bookmarks (almost 1200 of them) displayed in my sidebar, and this is the first time an issue like this has arisen with a Firefox update.

To remedy this scenario, I must use very light colored themes that have a white background when you bring up the sidebar bookmarks. If not, everything is totally dark and unreadable.

Any ideas or help on this one?

Asked by benherrmann1 7 months ago

Answered by benherrmann1 7 months ago

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Text in my Bookmarks bar turned black

All of a sudden, the text in my Bookmarks bar has turned black making it unreadable on the black background. Any idea why this happened and how I may revert the text back… (read more)

All of a sudden, the text in my Bookmarks bar has turned black making it unreadable on the black background. Any idea why this happened and how I may revert the text back to white? Thank you for your help.

Asked by Bob 7 months ago

Answered by Bob 7 months ago

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firefox will only work in troubleshooting mode

Several weeks ago Firefox worked normally for me. I left for most of the day and when I got home Firefox no longer worked at all. Everything on my home page was gone an… (read more)

Several weeks ago Firefox worked normally for me. I left for most of the day and when I got home Firefox no longer worked at all. Everything on my home page was gone and when I typed in websites - such as my e-mail program or Facebook, nothing ever came up. I'm not super browser savvy, but I opened the menu and under help was "trouble shooting mode". I didn't know what that was but figured nothing much more could go wrong with Firefox, so I chose that. I had to rebuild the websites I had in a row on the middle of the page. I didn't lose bookmarks, but everything else was different. So I left it that way.

Earlier today, Firefox wanted me to do another update. I thought maybe by agreeing to that, things might return to normal. Noooooooo. It's no better whatever. Now I don't know how to get out of troubleshooting mode to know if anything will work normally again.

I am seriously considering switching browsers, but I have a LOT of stuff bookmarked and that would be very intensive to build all those book marks in another browser.

Asked by clmcda63 7 months ago

Last reply by Ed 7 months ago

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YouTube not rendering after upgrading to v140.0

Upon upgrading to v140.0 on macOS Sonoma 14.3 (23D56), YouTube no longer renders. All add-ons (ad-blockers, development tools, accessibility tools, etc.) were removed … (read more)

Upon upgrading to v140.0 on macOS Sonoma 14.3 (23D56), YouTube no longer renders.

All add-ons (ad-blockers, development tools, accessibility tools, etc.) were removed and still the same non-rendering as of this evening June 24, 2025.

Asked by keith66 7 months ago

Last reply by Denys 7 months ago

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Stop automatic updates

Hi, can someone please to me how to turn off automatic updates on Firefox Version 140.0 (64-bit)? Firefox's own support page, "https://support.mozilla.org/en-US/kb/firefo… (read more)

Hi, can someone please to me how to turn off automatic updates on Firefox Version 140.0 (64-bit)? Firefox's own support page, "https://support.mozilla.org/en-US/kb/firefox-options-preferences-and-settings?as=u&utm_source=inproduct", is incorrect. It states that, "Firefox Updates Here you can check your update history or change update settings for Firefox.", but you can not change the update setting, (see attachment).

It is really annoying it updates while you are using it, ruining your experience as you can no longer refresh tabs or open new ones forcing you to restart it.

Asked by yard-payee-theater 7 months ago

Last reply by jscher2000 - Support Volunteer 7 months ago

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Sidebar

With the latest update, no matter if I've got it set to light or dark, the sidebar text and background are almost the same color. It's unreadable. There is no way to ch… (read more)

With the latest update, no matter if I've got it set to light or dark, the sidebar text and background are almost the same color. It's unreadable. There is no way to change just the sidebar, and it ignores the light/dark setting.

Asked by rundesnettes 7 months ago

Last reply by Denys 1 month ago

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Have Firefox 140.0 but get old address and search bars

I want to use the new search bar, but my Firefox browser shows the old address and search bars. I have been upgraded to Firefox 140.0. I am using Windows 11 on a desktop.… (read more)

I want to use the new search bar, but my Firefox browser shows the old address and search bars. I have been upgraded to Firefox 140.0. I am using Windows 11 on a desktop. How do I make the change? Thank you.

Asked by Brenda Kalt 7 months ago

Last reply by Denys 7 months ago

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NYT site won't let me open any articles, and yes, I'm logged in. Works fine on other browsers but I'm a Firefox guy

When I click on NY Times link, I get this message: You have been blocked from The New York Times because we suspect that you're a robot. I'm just an old guy with a low to… (read more)

When I click on NY Times link, I get this message: You have been blocked from The New York Times because we suspect that you're a robot. I'm just an old guy with a low tolerance level for tech glitches. Any help greatly appreciated!

I called NYT Support, which tells me it must be a Firefox issue since I can open in Chrome, Safari. I thought it might because I have the Enhanced Tracking Protection box checked, but unchecking does nothing.

Out of ideas.

Asked by wa 7 months ago

Answered by wa 6 months ago

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Setting Home Page

I want to make myMSN ( URL is www.msn.com/?pc=U506&ocid=U506DHp ) my Firefox Home Page. I have tried all the suggested methods but apparently I'm not doing something … (read more)

I want to make myMSN ( URL is www.msn.com/?pc=U506&ocid=U506DHp ) my Firefox Home Page. I have tried all the suggested methods but apparently I'm not doing something correctly because none of them have worked. The closest I've come to success is pasting the URL in the Home Page option in Firefox Settings, but I can't get it to stay there. There is no "SAVE" button to click on. My old computer (running Windows 10) had no trouble setting myMSN as my Firefox Home Page but this new computer running Windows 11 is making it extremely hard (impossible so far). I have tried following suggested methods step-by-step but without success. Please help.

Asked by aljweismandel 7 months ago

Last reply by jscher2000 - Support Volunteer 7 months ago

using Firefox somehow my bookmarks have been erased

I am technically challenged in my 80s. I have always used Firefax bookmarks. Somehow I can not pull them up today. It seems they have been erased. I have an apple com… (read more)

I am technically challenged in my 80s. I have always used Firefax bookmarks. Somehow I can not pull them up today. It seems they have been erased. I have an apple computer.

Asked by judyaconard 1 month ago

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Please enable JS and disable any ad blocker

Recently I have been unable to go to websites where I have had accounts for years. I can no longer access sites like Chewy, Etsy, and even Pinterst. On the latest failure… (read more)

Recently I have been unable to go to websites where I have had accounts for years. I can no longer access sites like Chewy, Etsy, and even Pinterst. On the latest failure to sign in to Etsy the message I got is "Please enable JS and disable any ad blocker" I don't want to learn another browser. Please understand I'm a senior so not as savy as you young folks. My Firefox browser is 140.0 so it is up to date

Asked by Cruz.mail.01 7 months ago

Last reply by Kiki 6 months ago

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firefox developer edition no longer working on X11

export GDK_BACKEND=x11 MOZ_ENABLE_WAYLAND=0 MOZ_DISABLE_WAYLAND=1; /mnt/bootdrive/firefox3/firefox/firefox -P tx1p72s0.dev-edition-default XPCOMGlueLoad error for file /… (read more)

export GDK_BACKEND=x11 MOZ_ENABLE_WAYLAND=0 MOZ_DISABLE_WAYLAND=1; /mnt/bootdrive/firefox3/firefox/firefox -P tx1p72s0.dev-edition-default XPCOMGlueLoad error for file /mnt/bootdrive/firefox3/firefox/libxul.so: /mnt/bootdrive/firefox3/firefox/libxul.so: undefined symbol: gdk_wayland_device_get_wl_seat Couldn't load XPCOM.

Has support for X11 been removed?

Asked by alexpennyblack 7 months ago

Last reply by jonzn4SUSE 7 months ago

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After most recent update, my bookmarks list only shows the thumbnail image but the text descriptions are faded.

After the last Firefox update, my bookmarks list only highlights the thumbnail image. The descriptive text which was previously in white colored text is no longer colore… (read more)

After the last Firefox update, my bookmarks list only highlights the thumbnail image. The descriptive text which was previously in white colored text is no longer colored but faded and not readable. How do I resolve this problem? Zak

Asked by zakhome 7 months ago

Answered by Paul 7 months ago

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Extreme frame judder on YouTube

YouTube videos encoded at 60 frames per second are extremely choppy in Firefox only. Microsoft Edge plays the same videos perfectly. I have deleted my profile and reinst… (read more)

YouTube videos encoded at 60 frames per second are extremely choppy in Firefox only. Microsoft Edge plays the same videos perfectly.

I have deleted my profile and reinstalled Firefox, updated graphics driver to the latest version, and toggled hardware acceleration on and off. Nothing helps.

Asked by Jens Lyn IV 7 months ago

Answered by Jens Lyn IV 5 months ago

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Extension button Firefox toolbar

The release notes for Firefox version 140.0.1 indicate the extension button can can now be removed from the toolbar.the noes say: "Firefox Extensions: Customize your too… (read more)

The release notes for Firefox version 140.0.1 indicate the extension button can can now be removed from the toolbar.the noes say:

"Firefox Extensions: Customize your toolbar with the option to remove the extensions shortcut, giving you more control over your browser. When the button is hidden, you can access the extensions panel again at any time from the Firefox menu by clicking the Extensions menu item."

I still cannot drag the button down and out of sight by customising the toolbar.

Suggestions welcome.

Asked by SuMo Bot 6 months ago

Answered by jscher2000 - Support Volunteer 6 months ago