Firefox Support Forum

I'm facing a bewildering problem with Ctrl+Shift+T, which has only started in the past few hours and persisted through troubleshooting.

In short, it's opening a default new tab when I press that combination, rather than reopening the last closed tab, as is its normal function. The problem is not that the tabs themselves are lost -- the "Reopen Closed Tab" drop-down menu entry is still available on right-click, and seems to function as expected. Similarly, I checked about:config to see if there was a problem with sessionstore or sessionrestore, both of which are at their default settings and can't be causing this. Rather, something about the combination itself is no longer working.

I ran Firefox in Troubleshoot Mode to see if any of my settings were causing this. The problem persisted there, so that doesn't seem to be the case.

A little over a month ago, I got a new phone and synced up my desktop and mobile (Android) Firefox tabs, which I hadn't done previously. This is really the only thing I can think of that would lead to any issues, but it's impossible to match the timeframes -- I noticed this problem today, five hours ago. (The failure for ctrl+shift+t to work includes tabs that were opened from mobile sync.) I make heavy use of this keyboard shortcut and would've noticed it earlier if it started earlier.

Something about Ctrl+Shift+T itself is not properly being 'translated'. Ctrl+T works as expected (opens a blank tab), which is the same thing the Shift version is doing. Both my Ctrl and Shift keys are working fine in other respects (e.g. shift key capitalizes letters and adds special characters), so it's not keyboard hardware. It's not "inconsistent" -- it consistently works for everything else, and consistently doesn't work for this.

I'm using Firefox 122.0 on Windows 11.

In my location, my only option for internet access is a mobile hotspot with limited data. Consequently, I am always mindful of my data usage when using my laptop. Despite primarily browsing static pages, email, and other low-data activities, I often find my data usage higher than anticipated. The main culprit comes to mind to be videos embedded in news articles. Sometimes, with multiple tabs open, I switch to an inactive tab only to find a video playing. Although I've configured my Firefox preferences not to autoplay videos, it seems that YouTube videos still override these settings.

So, my question is, when a tab is inactive, does Firefox stop all data transfer for that tab in the background? And if not, what are the solutions to stop any background data other than continually closing all tabs?

Also, any suggestions on this topic are appreciated, especially from and to users who also live in remote areas without fiber, DSL, etc.

This is happening near a year and I can't find a way to consistently replicate this issue but;

While Private Mode is open, if I open the Normal Mode, visit some sites then close it, when I reopen the Normal Mode it is restoring the last session.

This wasn't happening when the Private Mode was separated, like umm, it wasn't have it's own icon at the Task Bar.

So far I tried setting these values to false in about:config browser.sessionstore.resume_from_crash toolkit.winRegisterApplicationRestart

but it doesn't help with this problem. It only works if the Firefox actually crashes or closed abruptly like powering off the PC. But doesn't stop it's restoring when done this way.

I was running 8 Windows with about 12 tabs per Window. AND I had it set to Continue Where You Left Off, so that each time I closed and launched FireFox, ALL Windows with ALL Tabs would open. No problem. Easy.

This morning, Firefox crashed and LOST EVERYTHING. Why did it happen? And how do I get them back?

Jev

I have been using the "Restore Previous Session Option" fairly often for years, but within the last few weeks the option is no longer there.

I had tried to use the Settings > Open Previous Windows and Tabs as a workaround, but it doesn't appear to be consistent.

Did something change in a recent update, or is my installation broken somehow? I tried refreshing Firefox but that didn't bring it back.

The article here shows what I am referring to and has a screenshot of where the "Restore Previous Session" option was: https://support.mozilla.org/en-US/kb/restore-previous-session#w_when-session-restore-occurs

[[Knowledge Base Article|https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/gallery/images/2021-05-19-06-31-50-513d15.png]]

Anyone else have this problem? Is my installation broken? And how to fix?

I have Firefox installed on my Windows 11 laptop. When I click on a new tab, I want that new tab to show 4 rows of icons of sites I have visited most frequently like my bank, Amazon, etc. I do not know how to set a new tab to show the 4 rows of icons. These icons show up in Firefox on my Windows 10 desktop computer but not on Windows 11 laptop.

Hi, I have recently update my Win system with everything including Firefox. And now when I open new tab there is the same Firefox icon like always, but when I it is loading new page then its new X. When it is done with loading it changes to OK icon of the dedicated page. Is this X normal? Thank you

When I click a link either form a web page or from an email I get a whole new window rather than a new tab in the existing Firefox window. This new window is stripped back without the usual menu of options at the top. Is this EDGE taking over my life? I have Firefox as my default browser.

Hello,

I am wondering how to remove the web icons/favicon from tabs (and windows if possible) for specific websites, but not all websites. I know you can hide all favicons using 'userChrome.css' and the code:

.tabbrowser-tab .tab-icon-image { display: none !important; }

Is there any way to configure this to block just a site like Wikipedia, without blocking everything else?

Thanks.

Unfortunately it is not listed here: https://support.mozilla.org/en-US/kb/how-set-tab-pickup-firefox-view#w_set-up-firefox-view How to switch to firefox view (first tab where all your windows and tabs are) with a hotkey!

I use an addon to display my tabs in a tree on the side of the screen. As such, the horizontal tabs at the top of the screen are unnecessary, and I would like to remove them.

I've tried to follow a few other guides on how to do this, without success. I've created a userChrome.css file in the "chrome" folder of my active Firefox profile. It currently looks like this:

1. tabbrowser-tabs {

visibility: collapse !important; min-height: 0 !important; }

tab{ display:none!important; }

However, the tabs remain. I've tried a few other permutations of these rules. I've made sure to save the text file and restart firefox multiple times. It also persisted across a PC restart.

What am I doing wrong?

In the tabs column,it is very difficuit to close certain unwanted tabs ie,when we open 9..or 10 tabs simultaneously.There is no close button for each tab when we select to close the particular tab.So we kindly request you to provide close button to each tab bar.(right click option is available,but it's not confortable).

All of a sudden, I can no longer open new tabs in Firefox just by clicking the top bar (sorry, don't know how to describe this: the space that sits just below the line with 'File', 'Edit', 'View', 'History', etc. (Menu bar?) Formerly, when I had a tab open I used to be able just to click that line and a new tab would open. To open a new tab now I have to look to the right of the screen, and press the '+' button (Open a new tab Control+ 1) that appears in that same area just below the that is there. Not nearly as convenient. Please tell me how to fix this as simply as possible (I am not very computer literate). I have done nothing to change anything in the Firefox settings, so don't know why this happened all of a sudden. Very frustrating. My bookmarks all disappeared too, by the way, thoughI figured out how to resstore them to top of screen. I am using Windows 10 Thanks in advance, A frustrated Cynthia

Hello! After updating from 108 to 122, there's no restore previous session button. The recently closed tabs option only returned half of the tabs. Will this bug be repaired and how can I get back the tabs?