Firefox 社区论坛

前提として、139.0.4 では発生せず、140.0.2 では発生することが確認できました。（この間にイベント発火に関する修正が入っている？）

onloadイベントやloadイベントが意図しないタイミングで発火してしまいます。 そのため、動作すべきではないjavascriptが動作してしまいシステムに影響が出ている状況です。

Chrome/Edgeでは発火しないタイミングとなっていて、かつfirefox ver.139.0.4でも該当の問題は発生していませんでした。

上記のようになってしまう理由が分かれば教えて頂けないでしょうか？

Not sure if this is the correct topic selection but nothing offered above really fits.

I tried to sign into my Allstate.com account today and kept getting error messages.

I called their tech department and they told me that Firefox has been notified a long time ago about this issue but has done nothing about it. I was told to use my email account instead of my user ID to get into my account via Firefox, but that if I do it that way, some functions still won't work on Firefox.

I was told that my Safari browser would work, and it does.

Not sure why Firefox refuses to fix this. This is crazy. I've also had problems signing in some other companies with Firefox recently where it used to work fine. It looks like they are just not keeping up with technology. I have the latest Firefox browser for my Macbook, but as companies update their sites, Firefox is staying behind. I prefer Firefox because of things like uBlock Origin, Enhancer for YouTube, and YouTube Watchmarker which I love, but I've had to use Safari more and more because of this issue.

Exactly how does one let Firefox tech know these things. They don't provide anyway to contact them which doesn't look good.

Twitter/X does not display, only an error message that says Twitter/X does not work with Firefox' advanced tracking (or similar). Requesting someone at Firefox and someone at Twitter/X get together and fix this so these two entities play nice with each other. Thank you in advance.

for some time now I've been unable to sign into my account at "spectrum.net" while using Firefox, and receive an error message "IDID 4009". I do not have any problem signing into this account using Microsoft Edge.

I don't know if this ever worked in FF, since I've been on Chrome a while. I tried canvas.toBlob() in FF without a solution.

The behavior is the same whether the served image is jpg or webp. A Servlet delivers the image data, here in webp:

          response.setHeader("Content-Type", "image/webp");

On page, I use a canvas thus => see '// FIREFOX'

     var canvas = document.createElement( 'canvas' );
     canvas.width = width;
     canvas.height = avail_height;
     var context = canvas.getContext( '2d' );
     context.drawImage( imgsrc, 0, 0, width, avail_height);
     context.lineWidth = 150;

     // FIREFOX: canvas.toDataURL('image/jpeg')=black, png,webp,default=transparent
     img.src = canvas.toDataURL('image/jpeg');

     img.onmousedown = disableDragging; // for FF
     img.style.opacity = "1.0";
     console.log('setImg ok');

Inspecting a black jpeg:

        data:image/jpeg;base64,...

Thanks!

There are several sites (i.e., Hallmark.com or BlueMountain.com that I am not able to get into thru Firefox. I am able to get into them thru Chrome. Why is this and how do I fix it? I am not completely sure how to navigate thru the Mozilla items and what they ask me to do.

Thanks,

Starting with several updates in recent weeks, that were coming fast and furious, etrade.com will not refresh. They have an update button but nothing happens. "F5" does nothing either. All other websites work.

I figured you must know, that's why there have been several updates in succession.

I have been using Firefox for 2 years on my Mac Air with Nord VPN to watch BBC IPlayer (UK connection) then about a week ago it would fail to recognise that I was in UK. I changed browser to Safari and it all works. I would prefer to continue to use Firefox.

Any thing I can do.

Andrew

Twitterで使用されている「t.co」等の短縮URLにアクセス出来ず、「アクセスしようとしているサイトを見つけられません」とエラーが表示されます。 他のブラウザだとアクセス出来る為、Firefoxの設定の問題だと思うのですが、解消方法が分かりません。 解消方法をご存知な方はいらっしゃいますでしょうか。

I am a user over at the Arcamax website I use it nightly to read the comics section for the last two days i keep getting an error message .

Bad Request

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

I went into my system cleared out the cookies for that website still cant get into the website I switch over to Chrome and it works fine but slow as molasses.

My yahoo mail account exceeded its' maximum storage. I upgraded and since then yahoo does not work on this computer. My yahoo mail account works fine on my laptop. Firefox was also upgraded along with windows 10

The Atlassian Confluence "Audio Briefings" icon is consistently greyed out using the Firefox web browser (my browser of choice). How can this be enabled? This is not an issue using the Chrome and Safari web browsers on the same content. I have verified Autoplay, Microphone and Speaker settings and ensured the domain has been added to the list of exceptions to the default (which is more restrictive). Hardware and WebGL are both enabled as well. I would think Firefox would want to ensure the browser is compatible with major business applications such as those by Atlassian.

Hello,

I’m experiencing an issue where I cannot use ChatGPT-5 in Firefox. When I log in and try to select or use GPT-5, nothing loads or functions properly. Other models like GPT-3.5 work normally, but GPT-5 does not respond.

I’ve already tried refreshing the page, clearing cache and cookies, and even disabling extensions — but the problem persists. Could this be a compatibility issue with Firefox? Any advice or support would be appreciated.

Thank you in advance for your help!

Hello,

Why can't I view the form on this web page in Firefox?

https://share.hsforms.com/13FBJZIz0QWCpxhMQLNhncAdr9pb

I can see it in Chrome?

This happens occasionally on varying web sites and is a real pain.

Thanks, Bill

Just updated and I can no longer login to the websites I normally use. When I go to this URL and click sign in

https://techcommunity.microsoft.com/blog/healthcareandlifesciencesblog/healthcare-agent-orchestrator-multi-agent-framework-for-domain-specific-decision/4416668

I don't have the opportunity to use my business account. I am rapidly re-directed to multiple URLS and finally end up on a page prompted to use my consumer account's key ( which doesn't exist).

I was able to do these same steps using two other browsers.

Sadly, at this point Fire Fox, which is my default and preferred browser, is no longer usable for me as this is normal all day usage for me to access these sites.

I have cleared my cache and tried multiple times to figure out this behavior but sadly no luck.

This is, btw, the very first time, in over a decade that I have had to ask for support, and it kind of sucks that there isn't a way to open a ticket and get support other than from the community :(

Hello Matt or David. A few weeks ago I started having the following problem: I login to my eBay.com.au, I search for anything, If I than need to ask the seller a question, it goes through the motion but when the the last button for the seller pops up, it does so for a split second and that it disappear. I have missed several times, but if I am alert I can just see it before it is no more. When I am desperate to get an answer, I am forced to open Edge, and here it works as it should. Can I assume that the problem is with Firefox? Your help would be much appreciated. Regards Ilio Pieroni