Firefox Community Forum

Since Thursday (new update rolled out Wednesday) I have lost all of my open tabs in one window.

Previously, when opening up Firefox, it would reopen my previous window with all tabs.

However now, even with the setting ticked in General (Startup --> Open Previous Windows & Tabs), it no longer does this. I have to go to Menu in the top right, History, recently closed windows, then guess at which window I should reopen.

Will this be fixed in the next update?

When I click to fill in a Credit Card field to pay for something, my correct card info appears momentarily, but then disappears. To execute a payment, I am forced to manually fill in all required information. I made sure the "save autofill" box was properly checked in the Settings, and it was. Names, addressed, etc. are all filled in properly; only credit card info is not.

I have to reset Firefox/Mozilla as my default browser every time I leave the browser and return. Each time I set it as my default browser, but I have to do it again and again. This is a new occurrence, as I have never had to do this until the last few weeks.

I really need some quality advice and will sincerely appreciate it if someone can guide me, because my head is spinning.

David

For a while firefox has been having issues where on youtube in particular when tabs are closed they will continue to play audio for a bit after they are closed. More recently I have closed tabs and the audio keeps on going indefinitely after the tab has been closed. This is on the latest firefox (151.0.4 64 bit) on windows 11.

This only seems to happen with youtube and in general youtube playback is buggy, slow, and lags the whole browser taking several seconds to switch tabs to or from a youtube tab or even close it.

Content Security policy blocks essential scripts no matter what I do.

It's new Firefox installation, Troubleshoot mode, Enhanced tracking disabled, I'm not on VPN, can log into X.com in another browser just fine.

It's the reason #1 I don't use Firefox. I thought the issue would be fixed but it has been like this for long time.

Yet whatever I do, whatever I turn off this pops up:

Content-Security-Policy: The page’s settings blocked the loading of a resource (default-src) at https://abs.twimg.com/responsive-web/client-web/bundle.Conversation.721fc4aa.js because it violates the following directive: “default-src 'self'”

The screenshot is from Zen, but it uses Firefox and the issue is the same in Firefox.

Over the past week or so, I've been finding that Youtube videos don't start from the very beginning - the very opening is missing.

So as examples, you're playing a song that you know starts directly on a beat, but that first beat gets missed, or there will be an opening sentence such as "Everybody is talking about the latest... " and what you hear is more like "Vrybody" - you can clearly hear that It's slightly off.

This relates to Firefox in three ways.

My initial thought was that there is some conflict with using an Adblocker (uBlock in my case) as Youtube is trying to force a pre-video ad that won't play, but even with the adblocker disabled the problem persists.

I then cleared my Firefox Youtube history so it loads as a completely fresh version - but the problem is still there.

Finally, I tried the same video on Chrome to see if this is definitely a Youtube issue...and it plays correctly without a problem.

Therefore, the problem seems confined to Firefox but I am unsure where - what setting needs to get tweaked to sort this out?

Firefox is updating 2-4 x/month while in use and has to be restarted. But my setting is on "Check for updates, but choose when to install". The last update recorded is listed as February 2026. So what gives? Thanks

I am no longer able to open in Mac Preview or save when hitting Command + P, then 'print using system dialog'. It will only print instead. For instance, I save certain web pages as PDFs using the print dialog and now it will only print when trying to use either the save or preview options. Command + P, print using system dialog, then I choose either save as PDF or open in Mac Preview, but as soon as I do one of these it will only print. I am able to use save in the drop-down list of printers, but I need to be able to open in Mac Preview.

I'm experiencing a strange issue with Firefox. Some websites are not loading properly, including my own website, YT Thumbnails. In some cases, pages load partially, while other times they remain stuck loading or display missing content.

I've tried refreshing the pages, clearing the cache, and restarting the browser, but the problem still persists.

Has anyone encountered a similar issue in Firefox? Could this be related to browser settings, DNS, extensions, or network configuration?

Any help would be appreciated. Thanks!

After copying profile that's already synced to my old account, I'm unable to set sync that copied profile to new mozilla account. According to support page, it should sync just fine by using different mozilla account. From what I noticed, this new copy profiles feature doesn't make a new profile in about:profiles, could this be an issue?

I have upgraded to a Macbook pro 2023 M2 Tahoe, and reinstalled firefox. When I open it, the search bar & my tabs all show as expected, but then disappear, can't find them. I have to close and open again to get back them back. I have googled this, tried some things (about:config - made sure "browser.fullscreen.auto hide" is set to false). I do not have a setting "always show toolbar in full screen" as suggested by google search. This shouldn't be that hard! Any thoughts? thanks!

I play online bridge (Trickster) twice a week and set up Firefox to share video and sound with my USB mic. (Windows 10 desktop, Trickster opened in Firefox). Most of the time it works fine but occasionally the other bridge players will tell me they can no longer hear me. When I click on the mic icon the message is that Firefox is using the mic. The settings still say that the mic is being shared. Sometimes a windows reset will fix the problem but not always. Can you explain what might be happening.

Whenever I search for images on Google, it completely breaks Google search completely. For example, if I search for "bananas" then on the main Results page it has some results and then some sections with drop down menus for more specific questions like "What are the benefits of bananas?" etc. But if I click on the "Images" tab, then it only loads around 6-7 rows of images before failing to load any more, clicking on the images that it does load will not open a website or the typical preview panel, and going back to the main results page from that broken images tab results in none of the drop down buttons working any more.

If I sign out of my Google account completely or even sign into a different Google account, then everything works as normal. If I sign into the same Google account and attempt the same process in a different browser (Edge) then everything works as normal. I initially thought this must be an issue with my Google account since signing out/into a different account caused the issue to disappear, but the I only have this problem specifically on the specific combination of this one particular Google account and the Firefox browser.

I have tried clearing site data, disabling/deleting extensions, and even fully uninstalling and reinstalling Firefox so far and nothing has helped.