Firefox Community Forum

Myself and a colleague who both use Firefox on Mac are experiencing the exact same issues.

1. Table header cells don't show their text, unless we specify a font for the table

I tried to put an example of the HTML here but it was rendered as a table by this page. I'll add some images of the code instead to show it.

In Firefox the Header cells are not visible, but in Chrome the text appears correctly.

If we add CSS like...

<style> table { font-family: Arial, Helvetica, sans-serif; } </style>

...in the header then the missing text in the THs appears.

2. Other font issues

The Wave accessibility extension has text that doesn't appear and throw errors like this in the console...

downloadable font: rejected by sanitizer (font-family: "Open Sans" style:normal weight:400 stretch:100 src index:3) source: moz-extension://b86260c9-33f6-4529-b12f-a101d8607bd4/styles/open-sans-v17-latin-regular.woff

These only occur on Firefox on our Macs. Fine on PC and other browsers on the Macs.

We tried a whole series of tweaks to settings to try fix this.

I have tried resetting Firefox and doing a fresh install but nothing fixes either issue. Are these known issues with recent Firefox releases on Mac?

I'm not sure when it started happening, but whenever I'm watching something full screen, or just full screening, Firefox on Mac, there's this thin white line at the top of the window that's very distracting. Has this been happening to anyone else and does anyone else know how to get rid of it?

I am old-school security conscious & have been using FF since its inception. Really. Clear my cache & delete browsing cookies on a regular basis. I use a private window for shopping and q&a info gathering. Recently I saw Walmart.com showing up in my cookies and couldn't figure out how/why as I *only* look at Walmart in a private window. Today I realized Walmart has managed to bypass the private window options and place cookies anyway! To say I'm furious about this is an understatement. I have adjusted my settings to "Strict" but it's still able to bypass the private window and is staying on my computer. I am updated to the most recent FF version; running MacOs Sonoma 14.7.7 which was just recently updated; I'm not going past this one for now but that really shouldn't be the issue. This is most definitely a FF issue and one that needs to be rectified not just because it's Walmart but because if they can do it so can others soon enough. This cannot stand.

Why when I search ABOUT:BLANK TAB, an empty page displays instead of the site I am searching for? I then have to go back and try again and again until it finally displays.

Cleared Cache, searched for extensions and not sure what to look for...they were verified by apple to be "normal". What else? Macbook Air 2023 running Sonoma 14.8.1

www.russellmoccasin.com won't load properly on any browser on my macbook pro running Mac OS 15.7.3. I don't have any browser extensions running, I've cleared my browser history, cookies, and cache. Still won't work. When I disabled javascript on safari and firefox, the website loaded perfectly. But I have to have JS running to use almost every other website on the internet, so what gives??

macOS Tahoe, Firefox 152.0.3 macOS settings include "Appearance - Auto"; i.e. system switches from light to dark at sunset. While the "top area" (tabs, address bar, bookmarks bar) of Firefox follows this - some of the pages themselves do NOT???

I found this website which was at top of the search results. I tried to follow it, but it seems to be badly outdated in certain key respects: esp wrt a setting called "ui.systemUsesDarkTheme" in about:config. I set this to "True", but may have screwed this up!! First question: Should I "reset" this somehow?

Finally: To get at the primary question, there are two "sub-questions" that may explain my confusion more clearly:

1. Is there no ***simple way*** to get Firefox & webpages I view to follow macOS Light/Dark appearance?? What are the CORRECT steps?

2. Do individual webpages have the ability to "decide for themselves" whether or not they will adhere to the system light/dark settings. This may well be an officially "stupid question", but while "most" webpages remain "Light" (including this Support page), a few pages appear dark.

Thanks, ~S

I understand that VPN was progressive roll out, but I have been able to successfully use it for the last two months. Today I upgraded to version 151.0.4 and the VPN icon was no longer up in the toolbar. I thought maybe I did something wrong and went back to customize and put it back on, but it's just not there anymore.

Did you decide to roll it back without warning?

Sometime in the last week or two, every page starts with a banner that says "you must sign in to the internet to continue". I'm already/always signed in. On those few occasions when I click on the network login link (rather than clicking X to dismiss this dangerous and wrong banner), it shows a very dangerous site and says that site is prohibited. (As it should be.) So why is the banner demanding that I log in (forcing me to click X to dismiss it)? This feels like your site has been compromised, that some malicious actor is forcing this prompt on every page. (And even after I click X to dismiss it, it reappears 10-15 minutes later.

My question is how do I temporarily remove my bookmarks. I have many bookmarks, hundreds, and I want to disable them temporarily for a few days so they can't be seen by another person using my computer. How can I disable them, but then make them all reappear a few days later? Can someone help? Appreciate the help. Thank you.

Hi folks My configuration: MacOS Tahoe FF 15.4.0 When I relaunched FF after restarting the Mac, in the Windows menu all the pages from the previous session were listed but none appeared when I tried selecting them. They must be hidden somewhere. I tried several work-arounds. The one that gives a result is by selecting in the View menu the Enter Full Screen item, then try to go back to a normal view which is a pain in the neck. Is there a clean method to make all those windows come back to their normal position and if possible preventing FF from doing this in the first place? TIA Nick

I want to cancel my subscription and get a refund but I already deleted my account. I read all the directions but can't find the links to make this all happen. I would appreciate some help. Than you,

For some scrollables, v153 doesn't respect the Mac OS setting to hide scrollbars unless scrolling on page load. If that OS setting is adjusted after the page is loaded, then the page respects it again until refresh, so there's apparently some sort of race condition going on where it's not reading the setting in time before the page loads?

This is not a problem in v152. I downgraded back to v152 and it's working again.

On some forums - not this one - I am unable to complete the relevant text box to compose a reply. EG the Devon forum: https://discourse.devontechnologies.com/t/sync-between-mac-and-ipad-works-and-iphone-not-working/87390/7 No text appears and the text box is completely inoperative. The problem is not confined to that site, but I have experienced similar on other Forums.

I use Ublock Origin which I thought might be causing a problem but disabling it has no effect, neither does disabling Little Snitch. As a result I've concluded this is probably caused by something in my settings but I don't know which or where to look.

Any suggestions appreciated.

Mac Mini M2 Pro; MacOS 15.7.8. Firefox 153.0.1 (British English)

I'm afraid I picked up malware despite Sophos due to this message upon routine searches, e.g. "Where's the nearest pet store". About this page Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests, and not a robot. Why did this happen? IP address: 206.194.252.88 Time: 2026-01-13T22:42:41Z URL: https://www.google.com/search?q=Pettstores+near+33069&ud m=14&sei=YMpmafbPMZyKwbkPzc23sAE

It's preceded by the reCaptcha request to check the box stating I'm not a robot.

I'm afraid to enter any passwords on here, to order anything, and especially engage in banking. I'm in a rental using WiFi, Thank You, Eileen

Emojis do not show on Firefox 146 on macOS. I downgraded to 145.0.2 and they do show, so it seems related to Firefox 146.

I have macOS 26.2 running in both test cases.

Emoji in question: 👨🏻💻

For some reason all of a sudden my bookmarks don't show their identification icons that are associated with that web site. Those icons are to the immediate left of the site address. I used to use those colored icons as a quick reference to select the web site I wanted. Being I have MANY bookmarks, those icons to the left weer a GREAT help to locating a specific bookmark.

   How do I get my bookmarks to show the way they used to show before? Is there a way to show my bookmarks to a earlier date? Maybe that way my bookmarks will show the way they used to ?
   Can someone please help. This new bookmark menu listing I now see is not user friendly! Thank you.

VPN is on. I can't access the internet. Error message is either: An error occurred during a connection to www.thewindowsclub.com. SSL received a record that exceeded the maximum permissible length.

Or: Connect to the internet You're offline. Check your connection.

I've googled the issue but it talks about ports and tunnels and going into settings. I've looked in the VPN Mozilla settings and there only seems the option to either include or exclude a website from the VPN. Nothing about different ports and testing. I've already written this message once but the VPN was on so it disconnected the internet and I lost this message! Trying a 2nd time now without the VPN

Any help? Or should I give up with it?

thanks Annie

Hello community,

I've been moved to MacOS at work and since then, Firefox will not always restore my pinned sites when I start it the next day.

Here is what I do:

1. Right click a tab, select "Pin Tab"
2. Go about my day
3. At the end of the day, I close Firefox by using command Q and shutdown my Mac
4. The next day, I start Firefox and most of the time, my pins are gone

I did not have this issue on Windows Firefox. I am using MacOS 26.5.2 and Firefox 152.0.4 Firefox says "Your browser is being managed by your organization" in settings. It is a link that can be clicked and the only active policy showing there is "DisableAppUpdate" which I assume is because we have our own tool to manage software updates.

Any idea what could cause my pinned tabs to disappear? I did not really customize the settings so far, I do NOT clear browsing data when exiting FF and the startup option "Open previous windows and tabs" is NOT selected. I have Ecosia and 1Password as plugins.

Any help appreciated, thank you.