Firefox Community Forum

Sorry folks, this is really confusing for me and it kind of snuck up on me like fading breaks on a car.

"This" computer is my main one and I use it the most.

I load youtube and get the usual list of suggestions. If I moved my mouse over any, they would start to play and I would "preview" them on that screen. I could select if I wanted the audio and subtitles.

All was good.

Fire fox has updated and the O/S has also over time and "recently" the "preview" stopped. (Oh well. Such is life.) I didn't think much of it.

Then the other day I was on ANOTHER machine (different O/S, similar/same plugins) and loaded youtube just for the sake of it and as I moved the mouse over the clips: I got the "preview".

I've shared the data from this machine. Kind of difficult to do it in/on THIS post from the OTHER machine also.

For clarity: It used to work. I didn't change any settings in any of the plugins/addons or FF settings. They were "working" as I wanted and so there was no reason to change them. I am guessing this is a "easy thing to fix" but the specifics of what I need to do is beyond me at this point.

I'd appreciate some guidance in how t find the difference between the two machine's settings so I can get the preview to work again.

Just to put it out there too: I have a "squillion" tabs open. They all seem to work and unless I really get carried away with things, Firefox 95% of the time behaves itself. Now and then it "locks up" and stops responding. The best solution is a total reboot and restart.

1. This could be under-reported problem. People will have problems reporting this bug

2. Whenever I try to save anything (image, website, Ctrl+S, print website to file, Ctrl+P, screenshots, same problem) my Firefox tries to "Open" something instead. I see dialog window with header SAVE, but the final button is labeled "Open" and after clicking it usually nothing happens. A haven't been able to save anything since this update. Only system-wide screenshots work for me now.

I had to use another installation in order to attach screenshot here. In the problematic 149.0, after clicking "Browse..." and selecting file, nothing happens, and no upload, moreover button won't respond to clicking anymore. Then I force refresh, and this text within this form disappears, but attached image appears.

3. Yesterday I have updated my Firefox to 149.0, using official debian sources, mozilla-deb - 1.0 -

cat /etc/apt/sources.list.d/mozilla.list deb [signed-by=/etc/apt/keyrings/packages.mozilla.org.asc] https://packages.mozilla.org/apt/ mozilla main

4. I have Linux Debian, (old version, Stretch+backports, yes, I am moving things already to new hdd), maybe it's related: 4.9.0-19-amd64 #1 SMP Debian 4.9.320-2 (2022-06-30) x86_64 GNU/Linux )

In order to fill this form I am using separate installation 140.9.0esr (64-bit), you could warn Debian teams not to propagate this error.

5. I have checked Console and Debugger, but they seem website-related. This error happens on every single website. Tried already troubleshooting mode, same problem. Please help us.

When I enable the firefox built-in vpn I have an error: "The proxy server is not found

Firefox cannot connect to the server at accounts.firefox.com What can you do?

Try to connect to another device. Check your modem or router. Log out and reconnect to Wi-Fi."

Thanks.

The Firefox default behaviour to reload a page for view-source even when it is already in memory is unnecessary and causes many difficulties when tracking CGI bugs.

This unnecessary reloading can be turned off by setting accessibility.blockautorefresh to true.

However, fixing these stupid page reloads this way introduces another hyper-annoying behaviour: then Firefox blocks redirects.

So this accessibility setting is bad in both possible settings. Is there a possibility to prevent reloading pages for view-source while still allowing redirects?

I had 6 groups in the sidebar showing when I closed Firefox last night. Today when I opened Firefox there was only one group showing how do I get the other groups re-displayed in the sidebar? I am finding no clues when using the last line in searching help

I set up firefox using my customised user.js, and I have been able to configure everything just as I want except for "Search Shortcuts".

Are there Firefox "preferences" (in the about:config "preferences" database) for the 10 or so "alternative search engine" entries (shown in about:preferences#search)? If not, is there any programmatic way that I can edit these "alternative search engine" entries so that I don't have to manually disable and/or remove them every time I install Firefox on a new machine?

TIA.

I had an issue where my browser disappeared. Here are specifics for my installation.

Name Firefox Version 142.0.1 Build ID 20250827004350 Distribution ID raspberrypios User Agent Mozilla/5.0 (X11; Linux x86_64; rv:142.0) Gecko/20100101 Firefox/142.0 OS Linux 6.12.62+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.12.62-1+rpt1~bookworm (2026-01-19)

I relaunched and then restored previous session. After that, I searched open tabs, but when I selected a tab that was reported to be opened,  it was not restored. I went to troubleshooting mode and it worked fine suggesting some issue with an extension.  What, if any logs could I capture to help debug? thanks

On Debian Linux, how can I make all text in Firefox BOLD - t'ab names, texts on Toolbars, text on web pages, everything?

I would like to allow or block extension for certain site.

What i need is: 1) Turn on extension on specific sites (like for government) 2) Do not load extension on specific sites

So there should be Order Allow,Deny and reverse Order Deny,Allow And two rules Deny *://example.com/* Allow *://example.com/some/*

Hi! I have a lot of tabs synced in the mozilla account on a device that I have not connected for a while (forgot it at a place far away). Recently I needed to open some of the tabs and while the device was shown in the account the tabs were not accessible. Isn't that one of the major points of using the sync, to be able to see things between the devices??? My reaction - WTF? It's like the perfect lie - hey look we have your device here.... but it is actually just the name. I am so frustrated about this.... why don't you even talk about this? Why is there no warning that my data is going away??? Why is this decision to delete the synced tabs (not the device but only its tabs) from the account happening without any notice, at a time randomly decided by someone? How is that making sense? Why can't the user be informed and make a decision? I think that's one of the reasons why you lose and lose and lose market share, because you don't care anymore about your users, you think all are idiots and you can make decisions for them and restrict their abilities to manage their experience. I know it is free software but it's getting worse until it will become absolutely irrelevant, please stop smoking whatever you're smoking and make more sense with your decisions to add/remove features and alter functionality. Just one more example of another senseless decision - the time options when I want to clear the history. Just 1/2/4h, since 12am and everything.... I am trying but there's no logic in choosing these intervals and restricting the user to only those.... Another one.... the extensions... it's like a dumb game of hide-and-seek to find their options and manage them or to put their icon on the toolbar or somewhere handy and visible so it can be used as it is supposed to be used.... does not make any sense! Ah yeah and the very very old complaint: WHY did you remove the status bar? Lots of info can be added there and it was VERY useful. This was one of the big "WTF is happening with Firefox?" moments.... only downhill from there. I will probably give up on Firefox if it doesn't come back to actually making sense. Not all users are idiots, give them back the power to use your (still good) software in the way they want, stop taking away features and options. And don't forget the power users, take their options away and they will go away.