Firefox Community Forum

In May 2025 all browsers should have removed the default styling for the h1 element when it is nested in a sectioning element (article, aside, nav, section). I went into Firefox Dev Editions user-agent style sheet and noticed that the styling for nested h1 elements is still the same. I'm wondering why that is the case, since I was under the impression that all the major browsers had completed make the necessary adjustments at the end of May 2025.

Hello! I've been seeing some strange behavior on firefox launch or on new profile launch. There is a popup during startup, can't see it on the screen but I can see it in tray. Is this normal or no? I observed it on two different hp notebooks so far.

Any time I allow a website to use my location on my home computer, it places me in a suburb in Las Vegas. However, I live near Seattle. This happens on multiple websites including Google Maps and Uber Eats, and on other browsers my location is correct. I'm not running any VPNs or proxy servers, I've verified that my IP address is linked to my correct location, and I've deleted all cache and cookies ("Everything" for time frame) from my history. Is there a way I can have an accurate location again?

i accidentally refreshed my firefox and ii got my profile back .. but i accidentally deleted it .. after contacting a local wizard and going on a quest i found my profile sitting in a dark corner of my drive.. it seemed to all be okay but i saw my awesome theme was gone !! after checking to see if i still had my awesome extensions they were ALSO GONE !! everything else is here though like my passwords and stuff.. where are my extensions and awesome seal theme !! im scared and alone !!!! help me mozilla helpers !!

Since Mozilla made Firefox Beta's update (B141.05), a few days ago, most fonts (.ttf's) and icons (.ico's) are matching the same color as the background (.bmp's) of the pages. Who else has noticed so? This does not help any user on any system. Connect.Mozilla.org - Who Agrees that Most Fonts are Camouflage to Websites?

Firefox just stopped showing the videos in youtube, I can hear the sound but no image, tested with 3 vids , all play normal on chrome sound and picture BUT NOT on firefox, I have cleared cache, updated firefox, rebooted, used CCleaner , cleared history, rebooted PC but to no avail. Are there any settings in Firefox that is preventing screening of utube vids. And how were they changed.? Regards and thanxs Janina

Hi,

Occasionally i get weirdly washed out colors on videos, this seems to mostly happens on my jellyfin instance on high res content. It does not happens on other browser, and the issue is very inconsistent, sometimes disappearing after a reboot, or when refreshing firefox. Same with firefox safe mode sometimes it fixes the issue... and sometimes it doesnt. Disabling or enabling HDR doesnt fix the issue.

I use firefox 141.0b4 and RTX 5070 Ti with the latest driver. Any idea how to fix this? Attached are some screenshots showing the issue

Suddenly they broke after the 140.0 update, but as it turns out, this is the case everywhere. Does anyone know what the problem is?

Verified on: Firefox Desktop, Chromium Desktop, Firefox Mobile Font: Calibri (No changes), Roboto (No changes) I've scoured half the internet, as if I were the only one with this problem...

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?

In the dialog box of this website https://www.doubao.com/chat/, you cannot paste images from the clipboard, but Edge can do it.

I'm having huge memory problems with Firefox. In about:performance I can see that the extensions process takes up way too much memory. When I start Firefox it usually shows a memory usage of around 180MB. However, at some point the memory usage of the extensions process starts to increase and it doesn't stop increasing until my RAM is full and then it increases even further. It increases until I restart Firefox or until it uses so much RAM that my computer runs incredibly slow.

Below you can see a screenshot of the Task Manager showing how much RAM is available on my computer and a screenshot of the about:performance page showing the memory usage of the Extensions process. The RAM available on my laptop is 10GB (the default configuration was 4GB of soldered RAM plus 4GB of exchangeable RAM. I have upgraded from 4+4GB to 4+8GB but 2GB of the soldered RAM on this laptop are used as GPU memory so the remaining RAM is 10GB). The about:performance screenshot shows a memory usage of 13GB for the extensions process which is possible because Windows automatically pages RAM on the SSD when I'm running low on available physical memory. This enables programs to actually use more memory than the available physical RAM but of course programs become incredibly slow when the RAM is full and huge parts of memory have to be paged on the SSD.

My actual question: How can I find the cause of these memory problems?

What I've tried so far

- I have created a memory report on about:memory. The result is at the bottom of this post. - I have watched the about:performance page and tried to find out what action triggers the memory usage of the extensions process to increase. At the start of the browsing session the memory usage is only at around 180MB. It stays like that for a while. At some point it starts to steadily increase by many GBs. But I couldn't find the cause. I don't know what triggers the extensions process to increase memory usage. - I could simply disable extensions and see if the problem gets solved. But I want to know which exact extension causes this problem. It is very difficult to find out which one it is because I have many extensions and I don't know what causes the memory usage to increase. So I would have to disable extensions one by one and wait for an indefinite amount of time and check whether memory usage stays low. But I don't know how long I have to wait until the memory usage would increase because I couldn't identify what triggers it to increase.

Rather than just using trial and error I would like to find a way to use debugging tools to exactly determine what causes the problem.

_______________________

This (https://pastebin.com/U3QXTAt9) is the memory report from about:memory. This contains the whole extension (pid 18332) section (copy & pasted by selecting the text on the about:memory page). I have left out the rest because I don't know if it contains private data. Please note: this is not taken from the same browsing session as the screenshot that shows a memory usage of 13GB. Why? Because programs run very slow when memory is low and large parts of memory are being paged. The debug tools usually require a lot of RAM and CPU performance so it's very difficult to use the debug tools when the memory is already full and programs are already running slow. This memory report shows a very high memory usage of the extensions process. In this case it's "only" 3.5GB but it was taken in an early stage of the increasing memory usage. As shown in the screenshot below, memory usage can go even higher than the available physical RAM on my computer. The memory report doesn't clearly show which extension is responsible for the high memory usage. In the memory report, I can only see a high memory usage for the items gc-buffers and gc-heap which leads me to think that the memory problem has something to do with the garbage collector. However, I cannot see which extension is responsible for this. No item in this list with a description that identifies a specific extension has a high memory usage. This is only an excerpt from the memory report (only the extension section). I went through the whole memory report with Ctrl + F "moz-extension" and looked for items with a high memory usage but I didn't find a single item with high memory usage that belongs to a specific extension.

I have created a music profile and copied some URLS there, but whenver I restarts Firefox, that profile is empty, although the tabs are now in history.That is a nuisance.I expect each Profile to behave as my original, Main profile.IOW all the tabs are remembered.Is this a bug?

pete

After a windows update(W 10), I had to reinstall Firefox, but everything has disappeared! All links to apps, my files, Bookmarks etc. How can I get my Firefox details back? Thanks for your help. Dave Neild

• • • • • • @b.com (Mod's note: email removed)

I have 2 instances of Firefox: I use stable for all my professional work, and I use Developer Edition (Aurora Channel) for personal things. The stable branch works fine. In Aurora though, certain key combos will not work. This even persists in troubleshooting (safe) mode.

Specifically, it seems anything using both ctrl+alt will not register alt, only ctrl. alt, alt+shift, and ctrl+shift all seem to work fine, but ctrl+alt and ctrl+alt+shift do not. Again, this works fine in stable, so I am clueless as to why it doesn't work in my other instance.

Another detail is that this happens on multiple websites, not just one. The post prominent one is Google Sheets. In sheets, you can insert the date using `ctrl+;`, the time using `ctrl+shift+;`, and both using `ctrl+alt+shift+;`. Inserting them separately works fine, but both causes only one to insert.