Firefox 社群討論區

Hello Firefox Support Team,

I would like to report a browser compatibility issue regarding CSS positioning behavior that differs from Chromium-based browsers.

• • Issue Description:**

When an element with `position: sticky` is placed inside a container with `position: fixed`, Firefox treats the sticky element as if it has `position: relative`, effectively breaking the sticky positioning functionality.

• • Expected Behavior:**

The sticky element should maintain its sticky positioning behavior even when nested inside a fixed-positioned container, as it does in Chromium-based browsers.

• • Current Firefox Behavior:**

The sticky element loses its sticky properties and behaves like a relatively positioned element.

• • Use Case:**

This issue particularly affects modal implementations where: - The `body` element receives `position: fixed` to prevent background scrolling - Page elements (such as `.total-section`) should maintain their sticky behavior regardless of changes to the body positioning

• • Browser Comparison:**

- **Chromium browsers (Chrome):** Sticky positioning works correctly in this scenario - **Firefox:** Sticky positioning fails and falls back to relative behavior

• • Request:**

Could you please consider aligning Firefox's behavior with other major browsers? The current inconsistency creates cross-browser compatibility issues and forces developers to implement JavaScript workarounds.

Thanks!

This has worked for me for years. It just began a few days ago when I tried to login and look at my new auto insurance policy. I've cleared the cache/cookies to no avail. I can access the web site with Edge (yuk)

Or is the only option - as a web developer, to make duplicate css flags?

I.e: https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Selectors/::-webkit-slider-runnable-track & https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Selectors/::-webkit-slider-thumb Where firefox supports the behavior, but under different flag names https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Selectors/::-moz-range-thumb & https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Selectors/::-moz-range-track

Im also looking for recommendations on barebones/simple parsers that can help make my html/css/js more compatible without messing up the code too much. Im hoping to avoid having to use a build system.

Thank you

Hi, I need help with an issue related to how my website https://forganica.com/ loads in Firefox. The site works fine on Chrome and mobile browsers, but in Firefox some elements are not rendering correctly and the layout shifts on scroll. Is there a recommended way to debug layout or CSS rendering issues specifically in Firefox? And is there any Firefox-specific setting or developer tool I should check to understand why my site behaves differently?

Moderator note: This question has been edited to correct the formatting.

In Firefox, the animation exhibits performance issues like stuttering, particularly in elements that rely on animateTransform and animate for movement or opacity transitions. This issue is not present in Chrome, where the animations run smoothly without any noticeable lag.

Expected Behavior: The animation should render smoothly on both Chrome and Firefox without any stuttering or lag, providing a seamless experience for users.

Steps to Reproduce:

Open the provided SVG code in Firefox.

Observe the animation, particularly the elements with animate and animateTransform attributes.

Notice the stuttering or lag compared to the smooth rendering in Chrome.

Firefox now takes forever to load Facebook. I tried resetting it but no joy. Duck Duck Go and the Microsoft browser are all much faster loading Facebook. Why is this? Can anyone help?

Hi Google Maps all of a sudden is not showing the names of places in Firefox. When Google maps loads initially the names show for about 1 second and then disappear.

 I am on a Surface Pro 9.  

Google Maps works fine in Chrome.

I have already tried disabling extensions, clearing cache, and ensure the performance is set to run normally. 

What else can I do to fix this?

When I play YouTube videos in Firefox, the video stutters and drops frames, even when set to 480p. The audio continues to play normally. This issue does not happen in Chrome on the same laptop.

The problem started about a week ago. I’m using Firefox on Windows 11. Restarting Firefox did not resolve the issue. I’ve attached screenshots for reference.

Today following a brief power outage I was no longer able to sign in to AOL with Firefox on my desktop computer. I am able to sign in to all other apps with no problem. I tried clearing my cache, restarted Firefox, restarted my computer and spent 30 minutes on remote desktop access assistance with AOL trying to fix the problem with no success. I can log in to my account using Chrome on the desktop computer and can log in with no problem using my Android phone but can't log in using my desktop computer with Firefox. I've verified that my Firefox version is updated. I am running Windows 11 Pro.

I would greatly appreciate any helpful advice.

Problem started with Firefox 146.0.1 Windows 11

1. Open outlook.com in FF browser (https://outlook.live.com/mail/0/). 2. Open any email. 3. No side scrollbar appears so you can't page down within email. Note: the Outlook folder scrollbar does appear and does work. 4. The within-email-item side scroll bar does appear from outlook.com opened in Edge browser. So this is a Firefox bug.

Have tried: a. Windows settings->Accessibility->Visual effects->Always show scrollbars = on b. Turned Adblock on and off for outlook.com c. Firefox settings autoscrolling, smooth scrolling tried all combinations.

Any fixes?

I typically use FF to log into social security accounts. I have not been able to use FF for a couple of months to log in to ONLY THAT SITE. I can on CHROME.

ERROR MESSAGE: Bad Request

Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

Using Firefox--When I try to access the daily set of images that comes in an email representing memories for this day which is pulled from my Onedrive Photos, all I get is a dark blank screen with a subtle pulsing wave as if it is searching.

I get the same thing when I go directly to my OneDrive Photos and try to pull up the daily photos there.

However, changing browsers and using Google Chrome--I can view the images in the memory email as well as those on my OneDrive directly

What does Chrome do that Firefox is not?

I recently had another browser related issue on a different problem trying to register online with Directv which would not complete with Firefox but when I used Google Chrome instead of Firefox, it worked.

This made me wonder if the above OneDrive image problem might be browser issue. Sure enough, it was.

I really prefer Firefox and I do not want to have to go to Chrome.

I can not get Youtube to load on desktop Firefox. It works fine on the mobile website, app, and Chrome. I've tried clearing cookies and site data, removing extensions, resetting Firefox, and disabling hardware acceleration, and so far nothing has worked. Has this been happening to anyone else ?

I cannot sign into my att/yahoo email while using Firefox. After calling AT&T they told me to use Microsoft Edge which I told them I would not! When trying to sign in I receive the error message "It's not you, It's us" try again. It is my belief that att is trying to coerce me to change browsers so they can spy on me

i try access some web video online but can't access example is www.123-hdd.com or www.037hd-movies.com When i access it sow message error is.

Hmm. We’re having trouble finding that site.

We can’t connect to the server at www.123-hdd.com.

If you entered the right address, you can:

   Try again later
   Check your network connection
   Check that Firefox has permission to access the web (you might be connected but behind a firewall)

but i try by chrome or microsoft edge can open the website normally. Please help me. how to fix this error.

I’ve noticed the bloxstrap download page doesn’t load smoothly in firefox, while it works fine in chrome. sometimes the buttons don’t respond unless I refresh. Is this a caching or compatibility thing with firefox?

Hello,

I'm facing an issue where my microphone does not work in Google Meet when using Firefox, even though I’ve granted all necessary permissions. This problem is specific to Firefox, as the microphone works perfectly fine in Google Chrome.

I prefer using Firefox because of its convenient screenshot features, but this microphone issue has caused major inconvenience during important meetings.

Kindly help me resolve this issue.

Thank you.

I am 81 years old, ad not a tech genius, but I can no longer access my memory photos that microsoft one drive sends me every day. It did work before, but now I get a blank screen. Microsoft help tried the edge system, and the pictures came up, but on firefox, I now get a blank screen. I do not want to change browsers

Yahoo Finance stock charts are not loading. Never encountered this problem before this week. A GeekSquad tech support person was not able to fix the problem and recommended I contact Firefox. Edge and Chrome load Yahoo Finance stock quote sites just fine; I'm only having trouble with Firefox. Any ideas on how to fix? Thanks! Carol