Firefox Support Forum

Locking this thread, please continue here: [/questions/1440193]
When I open Firefox, the tabs from the previous session do not open despite the setting. I end up with a start page showing only a new tab page. This has been happening over the past few days and I don't know why.

Does anyone have any ideas why this is happening.

This AM, I opened my Firefox Browser for the first time today and attempted to sign into my EaseUS account. I was confronted by a "request" to add "Browsing Safety by Safely" as an add-on to my Firefox. However, it would not let me to skip this "request" without adding it to Firefox. Nothing I attempted worked. I've never heard of a compulsory add-on, least of all from Mozilla! If I would have had the time, I'd have tried different accounts/log-ons/browsers, etc. However, I didn't have the time to do it then. Help please.

What is this? Have you heard of it? Do I have a problem? Should I remove the Add-On?

Thank you.

Harris [email address]

(email address removed; please do not post personal information on a public website; Forum rules and guidelines)

Hello, I'm using a document management system (SeedDMS for those who know) through Firefox 122.0.1 (64-bit, canonical 1.0, downloaded from packages.ubuntu.com for focal, running on Debian Bookworm, kernel 6.1.0-17-amd64/Debian 6.1.69-1 x86_64, X.Org X Server 1.21.1.7, KDE Plasma 5.27.5, KDE Framework 5.103.0, QT 5.15.8, i7-5820K, GeForce GTX 1070).

Within this document management system pdf.js (v4.0.379) is being used to preview/view PDF Documents. After starting Firefox the PDF view inside the DMS works fine until I suspend (to memory) and resume my machine. Regular HTML-content looks fine but the resumed DMS session shows only blank (all white) Pages inside the PDF view. Changing to a different PDF file doesn't help. The number and size of these pages is presented correctly. I can even select and copy (invisible) text from these blank PDF pages. The problem applies to all PDFs, whether they're single or multi paged, have images inside them (like with PDFs from a scanner) or not, etc. Reloading the page/closing reopening the affected browser window doesn't help, i.e. the problem persists.

I recently found out, that this also applies to PDF files directly opened inside Firefox (which also seems to use pdf.js as a PDF viewer), that is, this is not related to a specific site like my DMS.

The problem always persists until I kill Firefox and start it over.

Pdf.js seems to use a canvas inside a div (see screenshots attached) to draw the visual PDF content and another div to make the text layer selectable/searchable etc. I don't know what's happening to canvases on a system suspend/resume cycle in Firefox on Linux, but I suspect that's where the problem originates from.

This problem already affected older versions of Firefox and pdf.js.

Please let me know, if you need further information from my side to investigate that issue.

Thanks a lot!

So, i transferred to my new PC I had a recovery key, and about a lifetime worth of passwords on my account. I exactly followed these steps:

Reset your password with your account recovery key

If you forgot your password and need to reset it, follow these steps.

   Click the Forgot your password? link on the sign-in page.
   Check your email and click the password reset link in it.
   Enter your account recovery key.
   Create a new password.
   Create a new account recovery key. 

Now, my recovery key became my new password and my account is blank. Great. Have a good time!

Recently my browser stopped opening in full screen. It opens in a little box that is usually partially off screen. I have not changed any settings and do not understand why this is happening. I maximize the window which usually has to be done twice (meaning I hit the maximize window twice to get it to go completely back to full screen). I have also tried dragging the corners of the window to maximum size, but the following day it will go back to not opening in full screen. If someone could help me with this, I would really appreciate it.

I've been trying to reply to my previous question here: https://support.mozilla.org/en-US/que.../1440060, but my reply ends with an error - c attached. Therefore, I'm starting this new thread.

First, thank you for the answers. I have run into an issue and also have a follow-up question.

Follow up question: A while ago, I changed the autoplay settings in about:config, but I noticed they reverted to default. Do these settings reset with major browser updates? Or could it be that the settings' names changed, resulting in the default value being applied? Should I periodically check these values to ensure they haven't changed?

Issue: I updated the settings in about:config as mentioned in https://support.mozilla.org/en-US/questions/1440060 by cor-el. It appears to have stopped the autoplay of videos. However, after browsing Google News and Yahoo News articles for about 30 minutes, my browser crashes. This happens under the same usage pattern as before. The browser becomes unresponsive, and if I click on anything, I see the rainbow Apple spinning wheel. Eventually, I have to force quit the browser. See attached.

Thank you!

When the system theme (light/dark) is switched globally, Firefox recognizes this and also switches its theme automatically (if configured appropriately). This should also retheme addons opened in the sidebar (Tab Stash or Sidebery for instance), and it does so under certain conditions, namely if either a) no sidebar was opened when starting Firefox and the addon sidebar window is opened directly, or b) the sidebar was opened with start of Firefox. Unfortunately, no retheming of the addon window occurs when some other Firefox sidebar (such as bookmarks or history) was opened after Firefox start and before system theme switch. In that case, the addon window (which is opened as the system theme is switched) does not retheme. This can be mitigated by either restarting Firefox or by opening a Firefox sidebar such as bookmarks or history, and switching back to the addon window.

So to reproduce this behaviour:

1. Open Firefox and some sidebar addon directly (such as Tab Stash in my case, with Ctrl-Alt-S)
2. Switch system theme globally (I do this with Night Theme Switcher in GNOME)
3. Observe that Firefox correctly redraws the addon window
4. Open bookmarks (Ctrl-B) or history (Ctrl-H)
5. Reopen the addon window
6. Switch system theme globally again
7. Observe that Firefox does not correctly redraw the addon window
8. Open bookmarks (Ctrl-B) or history (Ctrl-H) again
9. Reopen the addon window
10. Observe that Firefox redrew the addon window

This has already been reported to the addon developer, who stated that it might be a bug in Firefox, since his addon only tells Firefox which colors to use in which mode.

System details:

• OS Version: Linux 6.7.4-arch1-1
• Browser Version: Firefox 122.0.1
• Desktop environment: GNOME

When you switch the language in a text field, the focus on that text field is lost and the focus goes to another browser tab. This only happens if at this time a video is playing in mozilla in picture in picture mode with the Always on top option enabled. How to fix it? (Ubuntu 22.04)

After facebook messenger upgraded their security chat with end to end encryption call/video is not possible in firefox. Call/video buttons even disappeared. However i can call from microsoft edge web browser for example. Is this some kind of bug with mozilla? Anyone have experienced this too?

I've read all of the recommendation on how to keep links from opening in another window. Tried them all to no avail. This is a new problem. Anybody out there finding the same issue? Find a fix?

Hi jscher2000,

my apologies for creating again a new question: still being unable to reply directly due to the "unexpected error" message.

Thank you very much for your prompt reply.

Yes, following your instructions I now can see and access the attachements. I cannot still opening them, only download them. It is not perfect but at least I can have access to the attachments without having to exit Firefox and go to Acrobat.

Thanks again!.

I have a problem. When I access my Firefox main default screen I open up a respective website I want to access but within a matter of a few seconds the main default screen automatically opens up again meaning I now have two windows open which shouldn’t happen! I have opened up ‘Help’ and have refreshed Firefox a few times now. Additionally, I have opened ‘Troubleshooting Mode’ which comes up with ‘Restart’ then ‘Open’ and I have ‘Refreshed Firefox’ from this option. I have cleared my Cookies and Cache. I asked for help through the Firefox Community. I received one response asking if the problem still happened in ‘Troubleshooting Mode’. My response 'yes' it does but I have not had any other reply. Hence, I am stuck. Nothing has worked which I find very frustrating. I have used Firefox for many years now but if I cannot resolve this matter I will have to select a different browser which I don’t really want to do.

I'm installing a Docker service set onto a new Ubuntu system, that has Firefox installed by default. One of the services is a GUI application.

However, when opening Firefox for the first time, a dialog shows up that I would like to disable (attached).

How can I disable this?

I'm running Firefox using: "/usr/bin/firefox --kiosk http://localhost"

I've already followed a lot of the suggestions in here: https://searchfox.org/mozilla-release/source/remote/shared/RecommendedPreferences.sys.mjs (and verified they are indeed set after installing my own "user.js" file), but I cannot find an about:config preference that disables what I'm still seeing.

Any help or ideas?

Hi,

What is the area above toolbox called (Firefox, File, Edit, View, History, Bookmarks, Tools, Window, Help) and how do I change color on just that?

Thank You, Leslie

Currently, there appears to be only one option to tell Firefox to open a given site in a specific container; that is, from the URL bar, to the right.

Would it make sense to have this configuration option presented in "edit bookmark" and/or in a right-click pulldown menu "Always open in this container"?

I just installed FireFox but keep getting Chrome browser. How do I set FireFox as my default browser? My bookmark tab icons keep changing - how to change them back permanently ?

I've tried a few addons that download website images but the website I go to has thumbnails that are linked to larger jpg's and addons I've used won't download the linked jpg's. I used "Download all images" addon which has a "Deep Search Option" and filters for downloading linked images but I can't get it to work. I couldn't figure out how to use the filters. I read about another addon called "download-links" that can search linked images and I might give it a try. Any suggestions? Has anyone tried "Download all images" addon?

Firefox is frequently deleting entries made on websites. I am entering information in boxes (like this one) on websites when suddenly FF bails out, the data vanishes off the screen and leaves me back where I started. It happened several times attempting to post this question. This seems to have something to do with hitting a key or the space bar--but what and why eludes me. I have tried changing settings on trackpad and mouse without any impact. Although this is a recent issue with a new computer, the issue does not occur using the same computer on Chrome. Any ideas?