Firefox Support Forum

Since yesterday, Firefox is crashing constantly. Any action taken on a page can cause it to crash. My cache and cookies have been cleared (every time I end a session), my computer has been restarted (now 20x). I have checked settings on MFF and all looks correct. I have used for years and never had this issue but have been using another browser since yesterday afternoon because this is disruptive to work. Anybody else having issues since the update 5/29/24?

tl:dr Here's the CSS to put in userChrome.css file. This is the "hides everything" option. See toward the end of this post for others.

1. navigator-toolbox:has(#PersonalToolbar[collapsed="true"]) {

 visibility: collapse;

}

+++

I was looking for a way to hide the nav bar and ran across this older forum topic (https://support.mozilla.org/en-US/questions/1288181).

The solution shown here seems to be non-functional these days (early 2024), but it gets us in the right direction, so below is the code for us to look at.

1. main-window[chromehidden*="toolbar"] #nav-bar {

 visibility: collapse;

}

This is CSS, meant to be copied into a text document, itself placed in a folder called "chrome" that you'll need to create in your browser's active profile folder. Per step 6 in the instructions (https://www.userchrome.org/how-create-userchrome-css.html) linked by @jscher2000 in the above-linked forum topic, you'll also need to set toolkit.legacyUserProfileCustomizations.stylesheets to "true" in about:config. If you don't know what about:config is, this is a good example to get started, but I'm not going to explain it here.

This CSS code selects the object with ID #main-window, with an HTML attribute "chromehidden" equal to "toolbar", and sets its CSS property "visibility" to "collapse". Apparently Mozila have changed the way they implement toolbar hiding, as this no longer works — this chromehidden attribute is nowhere to be found in the HTML that drives the Firefox interface, not sure if that's the place to look for it, but I think so. Anyway, we need to dig around in this interface HTML ourselves to see what changes when hiding the bookmarks toolbar, so we can adapt a new method to what's going on in the browser now.

To do so, we open a window within a window (chrome://browser/content/browser.xhtml) and run the inspector via Web Developer Tools. Comparing the HTML we see here with the bookmarks toolbar in each state (I used BBEdit to compare the texts), we see that the object with ID #PersonalToolbar experiences a change in its "collapsed" attribute when we hide/show the bookmarks toolbar. So in our CSS code, we shift our strategy to update the "collapse" CSS property for #navigator-toolbox whenever it contains a #PersonalToolbar object with its own "collapsed" attribute set to "true", which occurs whenever we hide the bookmarks toolbar. Somewhat surprisingly, this approach of updating the CSS property seems to auto-reset on its own when the "collapsed" attribute is set back to "false", which occurs when we show the bookmarks toolbar again. In other words, it simply toggles with the visibility setting of the bookmarks toolbar, and we don't have to write any further code.

If you're interested in hiding some other UI element when hiding the bookmarks toolbar, you can modify this code to do stuff like that (but to go beyond the below examples you'll need to suss out the object IDs, CSS properties, and HTML attributes — and maybe more, depending on what you're trying to do — on your own).

But for convenience, here's an example that hides just the tabs:

1. navigator-toolbox:has(#PersonalToolbar[collapsed="true"]) #titlebar {

 visibility: collapse;

}

Here's one that hides just the URL bar:

1. navigator-toolbox:has(#PersonalToolbar[collapsed="true"]) #nav-bar {

 visibility: collapse;

}

Since those are the only other two things in the #navigator-toolbox to be hidden, I suppose that means we now have all options on the table (at least the way I have the browser set up). Enjoy!

Hi all; the subject line pretty much sopeaks for itself. Lately (within the past few days), whenever I open a new webpage, the sidebar appears. Until now it would only appear when I wanted it to, but now it's doing it on its own and it's annoying as ****. I've tried everything I can think of to stop this, so I'm giving you all the outstanding opportunity to help me remedy this aggravation. Many great thanks in advance!

Hello! My name is Anya. I am desperately trying to manage my social media addiction and to help support that I am wondering if its possible to disable the privacy window. I know I can install a website blocker - which I have, but it does not apply to the private window so I have full access to social media on it, I just have to log in. I want to COMPLETELY block Facebook and Instagram off of my laptop. Is this possible? Thank you!

I have all my passwords stored on Firefox on my macbook pro. When I follow the instructions to sync my passwords on the Firefox app on my phone, it keeps rejecting my primary password, saying it is incorrect. I have deleted the app and re-installed it on my phone, but it still does not work. Why will my account not open on my iphone app? Thank you!

after the download of v.126.0 i discover my history, all of it, has been deleted. in its place is a single web site, which shows up as the only web site visited across a time span going back months. this single web site cannot be deleted from the history. it cannot be deleted through the settings menu. no new history is created by web visits. the persisting single web site is among the sites in my tool bar, but is also a site i have not recently visited (months before this happened).

Hi there, Can anyone help me please. Ive been using Firefox forever and yesterday I signed into a Gmail account to send an email to someone, I typed in who it was to, then subject and then when I went to type into the body of text, the keyboard wont work.

I thought there was an issue with the keyboard but I then I tried to type in issues on firfox and loads of text is missing, I basically cant use firefox at the moment as Im only viewing half the info.

Ive been sent a credit not from someone and this is what its viewing like.

I didnt change anything that Im aware of

Thanks and fingers crossed in anticipation. Andrea

Suddenly after 20 years of collecting invaluable basic reference works in one of the 20 bookmarks on my Bookmarks Toolbar called REF on my Firefox browser, today I find it simply marked "Empty". No idea why. No other tabs have been altered as far as I can tell. 28 MAY 2024

I am migrating to a new laptop. The new laptop keeps asking me for a primary password. I have never set one up. This issue doesn't happen on the old machine, only the new one. It also won't let me disable the pop-up that asks for the primary password. Please advise.

Been searching. Updated firefox and lost passwords (across MacBook and iMac Firefox versions) so googled, went looking for logins.json etc files. No sign of them, and no firefox folder in applicationsupport/library on my Mac. Showing hidden files. About:profiles shows only one profile. No idea how I can restore things. Time Machine backup on desktop iMac has no firefox profile files. Where is the data please? Etc etc :O)

I have just upgraded the OS on Mac Mini with the M1 chip to Sonoma (14.5) I am running Firefox 126.0.

Now it seems that I have more than one problem since the upgrade. The browsing history in my sidebar is not current. It is running about a day behind.

I reported earlier that the type on my LinkedIn is only out 7 pt when my settings have the minimum size at 14 pt.

Somebody please help. I'm afraid to do a refresh because I don't know what it will do to my banking settings.

Ellen Perless

I just updated Firefox & added recommended things. I went to "https://www.cranecu.org/" As soon as I hit the LogIn button I got an "Error 404" message. However, I called the office help & they suggested I try another browser. I switched to Safari the button works just fine. Any Suggestions? I am not the sharpest tack in the box when it comes to computers so please be simple. Thank You

Dear Firefox Support,

I am writing to report an issue I am experiencing with Firefox Stable (v.126.0) when attempting to access the URL https://ibb.co. This URL is supposed to redirect to https://imgbb.com, but instead, I encounter the following error:

Secure Connection Failed An error occurred during a connection to ibb.co. PR_CONNECT_RESET_ERROR

This issue seems specific to Firefox Stable, as I am able to access the URL without any problems on chromium-based browsers (Chrome and Arc) and Safari. Additionally, the URL works correctly on Firefox Nightly (v.128.0a1).

I have attempted several troubleshooting steps, including:

   Disabling all extensions
   Using private browsing mode
   Clearing cookies and cache
   Restoring settings to default

Unfortunately, none of these methods have resolved the issue.

Could you please assist me in resolving this problem? Any guidance or further troubleshooting steps would be greatly appreciated.

Thank you for your support.

I am running a Mac Mini with the M1 chip. I recently updated the OS to Sonoma (14.5) from Monterey and find that the type on Linked In is tiny, only about 7 pt. My FF is 126.0. My minimum font size on Firefox is set to 14 pt. If I make it larger, like 20, Linked In is readable, but all my other sites are too large and hard to navigate.

Your automatic reader thinks I'm running 10.5. I've never run 10.5 on this Mac.

LI says it is a Firefox problem, which it is, because the site reads fine on Safari.

I know that there are sites which don't work on Firefox, like Chase Bank, which is a drag. Please don't tell me that LI is another one.

Somebody, please help.

Ellen Perless

Using OSX 12.7.5 on two laptops and a Mac Pro. Selling one of the laptops. Removed personal data for Firefox by 'trashing' the Firefox folder in Libaray/Application support. Then disscovered that the 'Privacy/Security' folder in both the laptop and Mac Pro were now empty. Nothing else affected. Went into TimeMachine and restored the entire Firefox folder from a recent backup. Privacy/Security folder not restored. Anyone have any ideas?

When logging into a Wordpress site on Firefox, hovering over Username displays a gear (see first screenshot) which when clicked on exposes passwords and allows them to be edited (see second screenshot). This does not happen on other browsers. I'm on Firefox 126.0, MacOS Big Sur 11.7.10

After update 126 "open previous windows and tabs" no longer works. It is checked but open tabs are not reopened when firefox is restarted. Using macOS Ventura 13.6.7