Firefox Support Forum

Hi, yet again, I've opened Firefox to find just one tab, a Mozilla ad in this case; the 40 or so tabs I had open are gone. I had prepped for a day's work ahead and had opened the tabs I needed for research and work, ready to start in the morning. I don't know what's causing it; I do know that this most often happens when I've shut down Firefox, then go to Thunderbird for a last check of emails, and click on a link in an email which opens Firefox.

Is this a bug? Does Firefox just not like being opened via an email link? Is it a problem if a Firefox private window has been left open inadvertently, even though Firefox was properly shut? Or is it just Firefox updates that cause this problem? It's been happening for a while now, and is really frustrating and costly, workwise. Yes, I do have restore previous session ticked. I've shared the data report below - at the time of this post, not at the time of opening Firefox. Any help would be really appreciated, especially if it's simply explained :) Thank you

I have scoured the forms left and right trying to look for a solution. browser.sessionstore.resume_from_crash is set to false browser.sessionstore.resume_session_once is set to false. Trying and looking This browser still restores my tabs from shutdown, which is not something I want it to do at all.

There is a pinned tab that shows up on start-up that I cannot get rid of. I have unpinned the tab and exited Firefox but everytime I return it shows up again. I have even removed and reinstalled Firefox.

Help. This is annoying.

Mozilla makes it so difficult to use its features- for example I find nothing that says Restore Previous Session. I went to the stuck of three lines at the top right and went to hisotry, click on recently closed window and absolutely nothing came back.

Mozilla people lies too much and cares nothing about good communications, awesome instructions  and technical support.

I lost a month of work

A certain website (flixbus.com) is getting pinned on my firefox automatically. I have unpinned it several times but after few seconds, it gets pinned again. It's driving me nuts. I even cleared all my cookies but it didn't help.

'why are there false tabs open when i restore the session? i know wich ones were open yesterday and today it click on firefox and all tabs are wrong. tabs i didnt use fore months are opend wtf can i do????

I recently switched from Brave to FF. An annoying problem is that whenever I click web links in external programs such as Microsoft Teams, Outlook etc Firefox always opens it in a new window instead of a new tab like Brave did. Also the window it opens does not have my extensions enabled, indicating that it is some form of incognito or web view window or something? These are my settings.

How can I solve this issue?

I am wondering if it is at all possible to adjust the settings when pulling a tab into a new window. For example, if I am running Firefox fullscreen I would like the tab that I pull to be opened in windowed form. I noticed that this is typically the case when using Chromium-based browsers, but noticed that on Firefox it stays in the format as the previous window. (if already windowed the pulled tab will also be windowed) is there a way to ensure that the pulled tab will always be windowed?

I followed the instructions at [[Unload inactive tabs to save system memory in Firefox|https://mzl.la/3AdRbLx]] but I still occasionally see the tab refresh when I select it. I start with a search on Bing, click an article to open a tab, follow links from there, back to the first tab and select another. I repeat this until there are several tabs open. Sometimes the page refreshes when I switch back to one that I previously reviewed. Is that controlled by the option browser.tabs.unloadOnLowMemory? if so, it doesn't appear to be working. [Edit] - The last time this happened I checked my system and found 10gig used of 64gig installed. I'm using the most current version of FF 120.0.1 on Windows 11 Pro v 22H2.

Same as question 1337885, which was marked "solved", despite never being solved. (Solved for a few months is not solved!)

Does every user seriously have to go through the rigmarole of manually editing a CSS file in order to have a usable UI? (as per https://ourtechroom.com/tech/get-back-old-tab-design-firefox/, for example)

My tabs do not open correctly. They are squeezing in between the < and > and I have to try to find it? There is a big bracket showing between those two < > arrows.

I have no idea what happened but before the tabs started acting crazy, when I opened FireFox it was very, very small print that I had to resize with the 'Control, mouse up' move.

I had several windows open each with different tabs in them.

I shut down them down and switched off my Mac.

On restarting my Mac, one of the windows had disappeared from the restore session. I've checked my History but the tabs don't appear there.

I'm using the latest version of FF on a Mac Air M2

Please advise.

I find this does not happen when I opened Mozilla and searched for an answer, but if I am in almost any other site, and click a link, it oens in a new window and is so narrow, it is unusable until I stretch i. This is a pain, and never happened ubtil about 1-2 months ago after an update.

Please let m know if anyone has a solution to this irritating challenge.

Jim Rautio

My browser just updated to version 100.0 and now there's a big white block at the top that blocks access to tabs and the Minimize/Maximize/Close buttons at the top.

I found a few other articles going back to 2015 with this same issue and the only solution that helped a tiny bit was checking or unchecking the Title Bar box. Unchecking it helps a little bit as you can see in the attached screenshot.

The top of the image is with the Title Bar box checked, the bottom of the image is with that box unchecked.

Any idea how to resolve this?

I'm a realtor and I use firefox as my browser bc I have all apple products and an esign portal that I use doesn't work with explorer. Two days ago firefox stopped allowing me to open my MLS browser Navicamls.net. I can open it on internet explorer or any other computer that is not a mac, but I can no longer open it using firefox.

Walt Roark

I recently downloaded Tree Style Tab. I still see the horizontal tab bar. I would like to hide it. However, I have tried just about every answer I could find on Mozilla, Google, Reddit, and any other websites that offered solutions. Nothing has worked since the last update. This includes the "type in about:config, toggle to true, open profile folder, create userChrome.css file, copy and paste xyz code, save, and restart Firefox" route.

Any help would be greatly appreciated!

When i open a new tab it opens https://find-it.pro/ i don't have extensions that open it Can someone help Thanks