Firefox Community Forum

I am reaching out to seek assistance with a recurring issue we are experiencing in the Mozilla Firefox browser.

Issue Description: On the user's first visit to the page, the thumbnail fails to load and displays a black screen instead of the intended image. This issue is observed specifically in Firefox, while the same functionality works seamlessly across other browsers.

Steps to Reproduce: Open our webpage in Mozilla Firefox. Ensure it is the first visit (clear cache if necessary). Observe the thumbnail image section.

Expected Behavior: The thumbnail should load and display the intended image correctly.

Actual Behavior: The thumbnail displays a black screen instead.

Troubleshooting Steps Taken: Verified server response and headers; no anomalies found. Checked CORS policies and ensured they are configured correctly. Tested in other browsers (Chrome, Edge, etc.), where the issue does not occur.

Request for Assistance: Could you please help us identify if this issue is related to:

Any specific Firefox rendering engine behavior? Known bugs or limitations in handling thumbnails or images on the first load? Additional configurations we might need to implement for Firefox compatibility?

provide the solution on the issues i have atteched the page link as belowhttps://globalstep.com/art-page-revised-v6/

Firefox should have a button to activate detectportal.firefox.com function as it continually communicates to the network even though it is not required. By placing a button it can be activated when needed.

I just set up a server with linux Ubuntu 24.04 Desktop, with Firefox 129.0.2 included to do some dev and testing work.

Problem: Firefox seems unable to see or open files that are above or outside the user's home dir tree.

The only extra packages installed are the LAMP stack and Google Chrome, which has no problem. (had to have something for A/B testing.)

I've tried entering the url of file:///var/www/index.html, I've tried selecting 'open with...' from the files app, etc. Nothing works.

I can get to the file through http://localserver/index.html with no issues. I've verified permissions on the entire directory tree to the file. Everything from end to end has read permissions for all, 755.

I've checked the following advanced settings: security.sandbox.content.level..............................0 (started at 4, now at 0, no effect or change.) security.fileuri.strict_origin_policy.........................false (default setting as installed.)

I am able to open file:/// and get a dir listing. BUT, if I click on var, it gives "Access to the file was denied." I even tried changing the permissions on /var to 777, but no change.

This seems to be a Firefox only problem, since Google Chrome works where firefox doesn't.

I've spent several hours searching for ways to fix this, all with no success. Does anyone have any idea how to fix this, or even what to look at???

The list of previously visited sites in firefox windows seems to have shrunk in some recent update of firefox. Now, when I click the address bar I only get 5 options, the first being search with google and the remaining 4 being previously visited sites. Used to be that list was much longer. Is there a way to customize this, or revert it back to where it contains 10+ items?

Hi everyone, I love Firefox, but it has a very debilitating issue whereby login popup windows, those little ones you click on to login, do not come up at all on some sites.

I have a screenshot below for https://www.avsim.com from MS Edge, where the popup does work. It also works on Google Chrome. But after clicking on sign in, nothing happens at all in Firefox.

Popups are enabled, cookies are enabled and safe browsing is totally disabled in Firefox settings. I have also disabled my ad blocker, AdGuard, on this site.

Can someone tell me what settings may need to be fixed in Firefox, or is this another issue?

Thanks.

I am using a 2017 iMacPro with OS 13.6.9 and Firefox 132.01. Youtube will not open in my browser anymore. When I type youtube.com into the browser window, it takes me to an error page that says:

This account is not yet eligible to use YouTube. Read https://support.google.com/a/answer/9000768 for more information.

If we cannot fix this issue, I will stop using Firefox and switch entirely to Chrome.

So far I have tried to uninstall firefox and re-install it. I have cleared my cache and cookies several times and just today I clicked on the little shield in the search bar and turned off the toggle for enhanced tracking. I don't know what else to do. Any suggestions???? Please?????

What happened? Very odd bug here. I have a UAD Apollo Audio interface. My mac audio is routed to Apolos virtual 1-2 Channels. You can see the Audio Midi settings in the uploaded image.

Using Twitch there are some streams that play out of the wrong channels. For instance on one stream (https://www.twitch.tv/datto) the audio plays out of only the left side UAD Apollo Mon-L (the left channel of Apollos monitoring channel which is not virtual channel 1-2 my current Mac routing, but Monitor 1 only. Not even Monitor channel 2).

On other stream (https://www.twitch.tv/aztecross) it works correctly. I've tested on other browser including ARC and there was no issue. I've ran the troubleshooting mode and the issue is still present. I even changed my UAD Apollos to the normal Mon L-R channels and the issue is still present.

I'm wondering if Firefox has some issue with multichannel audio interfaces or audio interfaces in general?

I attached 2 images of my UAD console. You can see in the first image that on the MAC Channel there is no audio coming through while watching the Datto twitch stream. But you can see on the L monitor (all the way to the right) there is audio.

On the second image is a Aztecross twitch stream and audio is passing through the MAC channel correctly.

Any idea what is happening here?

Reproducible? I have checked that this issue is reproduced on Firefox, Firefox Nightly, Zen Browser.

What platform are you seeing the problem on? macOS - aarch64

hi , i have an issue when i browse the website g-portal.com when i try to enter my account setting for my server the website shows me an error "value.toString is not a function" i contacted the website customer support and they advised me to try another device, it worked but when i try on my device on firefox i get the same issue

The first image speaks for itself. When I want to change the way this setting is set in a Facebook group, when Firefox is full screen, the associated dialog is so placed and/or sized on the screen that it is partially truncated on the left by the left side of the display. I just checked in MS Edge and it displays normally there with full screen display. It displays normally in Firefox when I Restore Down. So this one at least does seem to be specific to Firefox.

I have a second full screen display issue that may be related, but this one isn't just Firefox; Ms Edge also shows it, and other applications also behave similarly: the right hand scroll bar disappears in full screen (as does the applicaion menu control)! I had some trouble taking a pair of images to illustrate this, using Snipping Tool. The second image, when Firefox is set to restore Down, shows the scroll bar and application menu control, which is what I see. The third image was more tricky to take because the first time I tried, the screen capture included a scroll bar and application menu control even though they were not visible on screen. I had to redo it and be very careful not to let the right hand side of the selection drift off the right hand side of the display.

It seems like the full screen display is just a little "larger" than the physical display. I have tried one or two other screen resolution settings and that has not helped. My best guess is that it's a monitor settings problem, but I've also fiddled with the monitor settings, again with no success. And even if a monitor setting explains the pervasive right hand side issue, it doesn't explain the Facebook dialogue issue, which does appear to be Firefox-specific.

So my current workaround is just not to have anything full screen :(

I have had a series fo problems over the last 2 months. All different, but on closer inspection, all connected to recaptcha and login security.

I have not been able to log into my wordpress admin website for 2 months. It just hangs with"Verifying you are not a robot". I can login using Chrome.

Now I have just taken out insurance for my car and have set up a login for my insurance portal - and can't login because "Recaptcha cannot determine that you are a human".

I have searched and found that there was a bug with recaptcha and firefox, but that this was fixed. In any case, this fix did not work for me.

Can anyone please tell me what I should do so that I can login to recaptcha sites?

Linux Mint (up to date) Firefox 130.0

Hello, earlier in the day I pressed a keyboard shortcut on accident when picking up my keyboard and has changed google results quite dramatically. I grabbed my keyboard and had a menu pop up on the left side and after i closed it noticed my google results had a scroll bar now. The results page only presents itself on the left half of the screen and a scroll bar has appeared on both the right side, cutting off text, and bottom of the page. These scroll bars only move a tiny bit and are quite unnecessary, but makes scrolling a pain as I have to be sure I am outside the new scroll bar area as they take precedent from the main scroll bar. I have googled Firefox's keyboard shortcuts and haven't found the one i need to fix this. Before I'm asked, no I do not have crazy zoom on and no zooming in does not fix this problem.

I was filling out a City of Portland nuisance complaint form, but the "SUBMIT" button would not appear in order for the complaint form to be transmitted. I could only scroll down so far -- there was nothing more, no page two, etc. Email to City confirmed the problem with the form was on my end. Then I used Safari to get that same City complaint form. Same site, same form. But, on Safari there was about a full page more to the form that had been missing on Firefox. Additional questions, boxes to check, spaces to fill, places to upload photos/files. And at the bottom of the form was the "SUBMIT" button. I don't think I've had this particular issue with other forms, questionnaires, etc. elsewhere. Is there a filter or something blocking random stuff?

I'm not able to Screenshot the page as shown in Safari, so: https://www.portland.gov/homelessness-impact-reduction/report-campsite I think I can "Add image" as a screenshot of the form as shown in Firefox . . . . . . . . . . . . . . oh well, turns out I don't know how to make all that happen. Thanks for whatever anyone can come up with.

From jscher2000 - Support Volunteer answering my previous question: His response to me: Hi, do you mean the sidebar that you can optionally open on the left side (Ctrl+B) or the Toolbar you can optionally open below the address bar (Ctrl+Shift+B)? In another thread, someone mentioned there is a new option for the sidebar to "collapse" which I guess means to close itself, but that isn't happening on mine yet. Perhaps it is an experimental option that is currently in testing. To roll back your sidebar to the classic behavior, you could try the following: (1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk. More info on about:config: Configuration Editor for Firefox. The moderators would like us to remind you that changes made through this back door aren't fully supported and aren't guaranteed to continue working in the future. (2) In the search box in the page, type or paste sidebar.revamp and pause while the list is filtered (3) If the preference is set to true, double-click it (or click the Toggle button at the right end of the row) to switch the value from true to false Any difference?

CLARIFICATION OF MY QUESTION: I checked the way you said and the sidebar.revamp already says false. What I am talking about is as follows: In the windows 10 we had, and using Firefox, there was the complete My Bookmaks list on the left side, from top to bottom. Those not showing I could scroll down through them. It also had a search bar where I could search for a sepcific bookmark. (I have had 2 strokes and I cannot remember things if I can't see it as I do it.) NOW, however, with Windows 11, there is a "tab" I guess you call it on the left end of the ribbon. If I click on that, the My Bookmarks expands down (like it did look before) and I can scroll down if the one I am looking for is below the shown part of the list. HOWever, if I go to type anything outside of that list, it collapses back to the tab. It also does NOT have the search bar for the bookmarks at all. So if I cannot remember where the bookmark is located (I have 95 bookmarks) I have to scroll down through most of them to find it. What I want is for the entire bookmark list to REMAIN visible or on top when I am doing other things. Ialso would like to be able to search for a specific bookmark which would bring it right up.

I HAVE USED THE YOUCARE SEARCH ENGINE FOR OVER A YEAR AND FOUND IT EXCELLENT, I'VE PROVIDED OVER 85 MEALS FOR ANIMALS IN SHELTERS, BUT YESTERDAY WHEN I WANTED TO DO A SEARCH, NOTHING CAME UP, IT JUST SAID 'NO RESULTS FOUND' I TRIED SOME COMMON SITES, NEXT, ARGOS, ALDI, AND IT JUST SAID THE SAME THING.

                                                                                              COULD YOU PLEASE HELP PUT THIS RIGHT,
                                                                                                                                                                    MANY THANKS, JANET.