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Back button closes tab when no previous page

Prior to the 6/16/25 release, hitting the back button on the three button control on a page with no previous pages would open the home page without closing the current ta… (read more)

Prior to the 6/16/25 release, hitting the back button on the three button control on a page with no previous pages would open the home page without closing the current tab. After the update, it closes the tab before opening the home page. This was useful for quickly opening multiple tabs, as well as preventing accidentaly closing a tab. Please revert this change, or make it a setting.

Asked by wwarfel123 8 hours ago

Last reply by Sarib Khan 2 hours ago

Pixel and Firefox issue

Hey, I recently fully switched over to Firefox, outside a few minor things it's working beautifully. However since a few weeks i'm having huge problems with the text-fie… (read more)

Hey,

I recently fully switched over to Firefox, outside a few minor things it's working beautifully. However since a few weeks i'm having huge problems with the text-fields within the browser, like Google Search and various other sites. I switched from Stable to Beta, no luck. To prove it still exists, I used the nightly build. It deletes whole pieces of text when pressing space and when backspacing the word sometimes returns. It's very unusual behaviour, but other browsers dont have it.

I'm using a Pixel 9 Pro, latest update (BP1A.250505.005.C1). I tried with Google Keyboard and Microsoft Swiftkey, both give the same issues and it's honestly not usable anymore for me. Below there is a screen recording showing the issue.

https://streamable.com/u4716v

Thanks!

Asked by kunststof 2 weeks ago

Last reply by kunststof 5 days ago

How to debug memory problems with extensions?

I'm having huge memory problems with Firefox. In about:performance I can see that the extensions process takes up way too much memory. When I start Firefox it usually sho… (read more)

I'm having huge memory problems with Firefox. In about:performance I can see that the extensions process takes up way too much memory. When I start Firefox it usually shows a memory usage of around 180MB. However, at some point the memory usage of the extensions process starts to increase and it doesn't stop increasing until my RAM is full and then it increases even further. It increases until I restart Firefox or until it uses so much RAM that my computer runs incredibly slow.

Below you can see a screenshot of the Task Manager showing how much RAM is available on my computer and a screenshot of the about:performance page showing the memory usage of the Extensions process. The RAM available on my laptop is 10GB (the default configuration was 4GB of soldered RAM plus 4GB of exchangeable RAM. I have upgraded from 4+4GB to 4+8GB but 2GB of the soldered RAM on this laptop are used as GPU memory so the remaining RAM is 10GB). The about:performance screenshot shows a memory usage of 13GB for the extensions process which is possible because Windows automatically pages RAM on the SSD when I'm running low on available physical memory. This enables programs to actually use more memory than the available physical RAM but of course programs become incredibly slow when the RAM is full and huge parts of memory have to be paged on the SSD.

My actual question: How can I find the cause of these memory problems?

What I've tried so far

- I have created a memory report on about:memory. The result is at the bottom of this post. - I have watched the about:performance page and tried to find out what action triggers the memory usage of the extensions process to increase. At the start of the browsing session the memory usage is only at around 180MB. It stays like that for a while. At some point it starts to steadily increase by many GBs. But I couldn't find the cause. I don't know what triggers the extensions process to increase memory usage. - I could simply disable extensions and see if the problem gets solved. But I want to know which exact extension causes this problem. It is very difficult to find out which one it is because I have many extensions and I don't know what causes the memory usage to increase. So I would have to disable extensions one by one and wait for an indefinite amount of time and check whether memory usage stays low. But I don't know how long I have to wait until the memory usage would increase because I couldn't identify what triggers it to increase.

Rather than just using trial and error I would like to find a way to use debugging tools to exactly determine what causes the problem.

_______________________

This (https://pastebin.com/U3QXTAt9) is the memory report from about:memory. This contains the whole extension (pid 18332) section (copy & pasted by selecting the text on the about:memory page). I have left out the rest because I don't know if it contains private data. Please note: this is not taken from the same browsing session as the screenshot that shows a memory usage of 13GB. Why? Because programs run very slow when memory is low and large parts of memory are being paged. The debug tools usually require a lot of RAM and CPU performance so it's very difficult to use the debug tools when the memory is already full and programs are already running slow. This memory report shows a very high memory usage of the extensions process. In this case it's "only" 3.5GB but it was taken in an early stage of the increasing memory usage. As shown in the screenshot below, memory usage can go even higher than the available physical RAM on my computer. The memory report doesn't clearly show which extension is responsible for the high memory usage. In the memory report, I can only see a high memory usage for the items gc-buffers and gc-heap which leads me to think that the memory problem has something to do with the garbage collector. However, I cannot see which extension is responsible for this. No item in this list with a description that identifies a specific extension has a high memory usage. This is only an excerpt from the memory report (only the extension section). I went through the whole memory report with Ctrl + F "moz-extension" and looked for items with a high memory usage but I didn't find a single item with high memory usage that belongs to a specific extension.

Asked by a72834234 1 week ago

Last reply by Ed 1 week ago

Changing download directory on Firefox android

I want to change my download directory on the mobile app, I've tried the solution of this post, but it doesn't seem to be working anymore, I can't find any other solution… (read more)

I want to change my download directory on the mobile app, I've tried the solution of this post, but it doesn't seem to be working anymore, I can't find any other solution

Asked by claymorwan 3 months ago

Last reply by Denys 1 week ago

Secondary profile fails to retain tabs when relaunched.

I have created a music profile and copied some URLS there, but whenver I restarts Firefox, that profile is empty, although the tabs are now in history.That is a nuisance.… (read more)

I have created a music profile and copied some URLS there, but whenver I restarts Firefox, that profile is empty, although the tabs are now in history.That is a nuisance.I expect each Profile to behave as my original, Main profile.IOW all the tabs are remembered.Is this a bug?

pete

Asked by peterlemer 2 weeks ago

Unable to access passwords

I have a Huawei P30 Pro and beta Firefox browser. When I try to view my passwords on Firefox, it brings up a lock screen password prompt. This page requires my password, … (read more)

I have a Huawei P30 Pro and beta Firefox browser. When I try to view my passwords on Firefox, it brings up a lock screen password prompt. This page requires my password, but the password is not recognized, even though it is correct. The lock screen password works in other situations but not in Firefox

Asked by Trevor Z 3 months ago

Last reply by T Jastec (CantODonSleep) 2 weeks ago

Loss of all Firefox info on PC after windows update

After a windows update(W 10), I had to reinstall Firefox, but everything has disappeared! All links to apps, my files, Bookmarks etc. How can I get my Firefox details ba… (read more)

After a windows update(W 10), I had to reinstall Firefox, but everything has disappeared! All links to apps, my files, Bookmarks etc. How can I get my Firefox details back? Thanks for your help. Dave Neild

            • @b.com (Mod's note: email removed)

Asked by Dave Neild 3 weeks ago

Last reply by mattc 3 weeks ago

  • Solved

Firefox deactivates and data not saved – Possible phishing or security risk”

Dear Mozilla Support, I am experiencing a serious issue with Firefox on my iPhone. The app activates normally, but after a few hours it becomes inactive on its own, and … (read more)

Dear Mozilla Support,

I am experiencing a serious issue with Firefox on my iPhone. The app activates normally, but after a few hours it becomes inactive on its own, and my browsing data is no longer saved. I believe this may be related to a security or phishing issue.

My cybersecurity services (including McAfee and Bitdefender) have notified me of potential phishing attempts, data access risks, and suspicious browser activity. I have reported these issues to my security providers, and they have opened case IDs to investigate further:

- McAfee Case ID: 03203372 - Bitdefender Reference: 1010231778

Due to these ongoing issues, I would like your team to check whether there’s any unauthorized activity linked to my Firefox account or app. I rely on Firefox daily and need this issue resolved as soon as possible for safe browsing.

If possible, I would also like to request that my Firefox browsing profile be locked or protected against unauthorized tampering, auto-deactivation, or interference by malicious software or attackers.

Please let me know what steps I should take, or if you need any further information from me.

Sincerely, Mod's note: PII removed

Asked by Mohammad k 3 weeks ago

Answered by Mohammad k 3 weeks ago

  • Solved

ExtensionSettings policy

We're exploring adopting a default deny policy for Firefox extensions in our enterprise. However when I tested this by creating a custom policies.json Firefox unexpectedl… (read more)

We're exploring adopting a default deny policy for Firefox extensions in our enterprise. However when I tested this by creating a custom policies.json Firefox unexpectedly removed all extensions for me, including the ones I thought I had allow listed. Here is my policies.json but just keeping in the Facebook Container add-on to illustrate:

{

   "policies": {
       "ExtensionSettings": {
           "*": {
               "blocked_install_message": "Only approved Firefox extensions can be installed, please email your request to itdept@example.org",
               "installation_mode": "blocked",
               "allowed_types": ["theme", "dictionary", "locale"]
           },
           "@contain-facebook.xpi": { "installation_mode": "allowed" }
       }
   }

}

What I would like is to to allow pre-approved extensions (including if they already are installed) and all other types of add-on, but remove and prohibit installation of unapproved extensions.

Can anyone assist, please?

Asked by Damon 3 weeks ago

Answered by Mike Kaply 3 weeks ago

Accidentally removed some tabs from Collection

Hi, guys! I currently have two Collections of tabs. I accidentally swipe some tabs which ended up getting remove from my Collection. I checked the history but it is not t… (read more)

Hi, guys! I currently have two Collections of tabs. I accidentally swipe some tabs which ended up getting remove from my Collection. I checked the history but it is not there. There's no restore recently closed tab or something similar like that. My Firefox Nightly app is up to date. Also, I'm using Android (Samsung A55). Is there any chance that I can retrieve those tabs? If yes, how?

Thank you so much.

Asked by justafangirl2898 3 weeks ago

Lousy search results

Often when I am searching for luxury items, I keep getting Amazon and Temu and Target and Walmart. These are not luxury retailers. Why does Manilla insist on sending me … (read more)

Often when I am searching for luxury items, I keep getting Amazon and Temu and Target and Walmart. These are not luxury retailers. Why does Manilla insist on sending me to these retailers all the time?!? I am looking for classic quality, clothing, shoes, housewares, etc. I am not looking for cheap plastic from China. How can I permanently delete retailers? I do not want to see in the search engine?

Asked by sfkaufman1 3 weeks ago

Last reply by Paul 3 weeks ago

they used youtube for smart mirroring

is there any idea how to cut them from my account , they control all my google accounts for years now, she put bugs, malewares unwanted apps viruses just to ruined my bus… (read more)

is there any idea how to cut them from my account , they control all my google accounts for years now, she put bugs, malewares unwanted apps viruses just to ruined my business and my personality hope you guys help me to achieved justice im joebert clemente 48 of legal age

Asked by Joebert R Clemente 3 weeks ago

Last reply by Paul 3 weeks ago

Address bar doesn't show search engine URL even when about:config edited

On Firefox beta for android. I prefer my address bar to show my search URL when searching. Instead it just shows my search terms, so "test" rather than google.com/q=test … (read more)

On Firefox beta for android. I prefer my address bar to show my search URL when searching. Instead it just shows my search terms, so "test" rather than google.com/q=test or something like that. I've tried editing the relevant about: config settings and this worked for a few moments but now doesn't have an effect. Anything I can do about this, as for me this is an essential feature? Cheers

Asked by gillybobs 4 weeks ago