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Firefox deleted my entire browsing history while signed in with syncing on, with no user interaction. This should never happen. What is the point of Firefox sync if it does this?

Error: bp-57bcdd30-438c-4af8-9e75-b5c9b0260822 OS: Linux Mint 22.3 Device: IdeaPad 3 15ARE05, CPU: AMD Ryzen 3 4300U, GPU: AMD ATI Radeon RX Vega 6, RAM: 8Gb

I used firefox troubleshoot mode to see if the problem is caused by an extension etc. But my tabs were still crashing, this time, firefox as a whole crashed. Sometimes a tab crashes, and sometimes firefox crashes. I tried to troubleshoot with an llm, it said that i don´t have enough RAM, i have 8Gb, but its shared between RAM and VRAM. I was on fedora before, the problem occurred there so i switched to mint with the thought that mint is more lightweight so it should have more RAM available for tabs. But that wasn´t the case. Sometimes i only have 1 tab open, nothing else on firefox and on my laptop open at that time, but the tab still crashes.

I hope i´ve provided enough information, if not, let me know what your missing to fix and i hope i can provide it :)

I run normal firefox on linux. Fully up-to-date. Every time I quit the app, it reverts to a version of my profile from a month ago, and loads all the tabs I had open then, and then receives all the tabs that I sent to the device in the interim (~1 month). As I speak, it just caught the 60 or 70 tabs in this window.

I tried changing the name of my profile folder to randomstring.defaultOLD and changed one of the backups to randomstring.default. This didn't change the behavior. I'm still stuck in the loop. I saved my tabs with onetab, because firefox isn't remembering my session anymore. I thought it was something to do with updates, like it only loses its mind upon updates, but that's not true. It thinks it's updating firefox EVERY TIME, because the one time it's loading to 1 month ago it was updating, but I'm 100% sure there are no updates to firefox in my linux. It's just hallucinating.

The articles on restoring from backup are outdated. They say to use an html file. There is no html file. It's just folders for profiles, not html files. HELP!

Recent update nuked all my custom containers, and closed every page that was currently open within those containers (pretty devastating bug).

Now, I go to add sites to the new custom containers I made to replace the earlier ones. When I go Manage Containers > pick a custom container > "manage site list ..." and there is no list. Just a blank window.

How can I make sure the Vertical Tabs sidebar stays visible in full screen mode?

It worked this way by default until the [154.0 release](https://www.firefox.com/en-US/firefox/154.0/releasenotes/#note-792047):

> Fixed the Vertical Tabs sidebar staying visible in full screen mode. It now hides along with the toolbars and reappears when the cursor moves to the edge of the screen.

Is there a config setting that re-enables the old behavior? I want the address bar to be hidden in full screen mode, but not the Vertical Tabs sidebar.

In some multi-line text fields:

• when I begin typing, a menu drops down or pops up.

Each menu option is a previously-typed phrase, not necessarily recent.

Is this a hidden feature of Firefox?

It's very recently evident with at least three websites:

• old Reddit, pictured at https://mastodon.bsd.cafe/@grahamperrin/117120940452711262
• Mastodon, pictured here and at https://mastodon.bsd.cafe/@grahamperrin/117124332180878790
• here – support.mozilla.org – when I began typing.

Reproducible with multiple Firefox profiles. Also evident with Firefox in safe mode.

Not evident with Microsoft Edge.

At a glance, I don't see anything relevant in release notes – https://www.firefox.com/en-GB/firefox/154.0/releasenotes/

It's possible that the feature was inadvertently enabled in response to an unknown combination of keys (shortcuts) as described in Mastodon.

Environment

   • Firefox 153.0.1 (64-bit)
   • Ubuntu 24.04.4 LTS
   • Wayland session
   • Input method: IBus
   • Keyboard layouts:
       ◦ US
       ◦ Bulgarian (bg+bekl)
   • Graphics:
       ◦ AMD Radeon Graphics (renoir)
       ◦ WebRender (Software)

Summary When typing a multi-word search query in Bulgarian into the center search field on the Firefox New Tab page (about:newtab), the first word disappears immediately after pressing the Space key. The issue occurs only in the in-page search field. Typing exactly the same text in the Firefox address bar works correctly. Steps to reproduce

   1. Open a new tab (about:newtab).
   2. Click inside the center search field.
   3. Switch to the Bulgarian keyboard layout.
   4. Type the first word, for example:   български
   5. Press the Space key.

Actual result The first word disappears completely. The search field becomes empty and the caret remains after one blank space. Typing continues normally from the second word onward. Interestingly, pressing Ctrl+Z immediately restores the missing first word, indicating that Firefox performs an undoable edit operation rather than simply ignoring the input. Expected result The first word should remain in the search field after pressing Space. Additional observations

   • The problem does not occur when typing in the Firefox address bar.
   • The problem does not occur on google.com or in other web page input fields.
   • The problem is reproducible in:
       ◦ Troubleshoot Mode
       ◦ a brand new Firefox profile
   • No third-party extensions are installed (only the built-in OpenH264 codec is present).
   • Setting

browser.newtabpage.activity-stream.showSearch = false removes the in-page search field, therefore the issue disappears because the affected widget is no longer present.

   • Disabling

browser.search.suggest.enabled does not change the behaviour.

   • If the address bar already contains text before clicking into the New Tab search field, the issue may no longer reproduce. This suggests that the bug could be related to focus handling or interaction between the New Tab search widget and the address bar.

Reproducibility Always reproducible on this system. Notes The issue appears to be specific to the Firefox New Tab search widget (about:newtab) rather than to the operating system, keyboard layout, input method, or user profile. ____________________________________________________________ The text above was created following extensive discussion and numerous tests, in collaboration with ChatGPT.

I have webpage (Home Assistant instance) on my local network on which I would like to use microphone (for Assistant functionality). Page is completely local, i.e. not visible from Internet. My issue is I can't force Firefox to allow microphone access on this page. I've tried messing with media.devices.insecure.enabled config, but it didn't help. Is there any way to add such page to some whitelist to allow microphone access? From what I gathered Chromium-based browser provides "--unsafely-treat-insecure-origin-as-secure=..." option but I didn't find anything similar for Firefox. I know I could expose my server to outside network and get SSL certificate (from Lets Encrypt) to make it work, but exposing server to Internet just to get local microphone access somehow doesn't feel like a more secure solution. I could probably also issue self-singed certificate but dealing with that also seems at least annoying.