Diễn đàn hỗ trợ Firefox

1. 1. Steps to reproduce

Open several tabs, in settings, check «ouvrir les fenêtres et onglets précédents», quit firefox.

1. 1. 1. Expected behavior

On startup, Firefox should reopen with the same tabs before shutdown.

1. 1. 1. Actual behavior

Firefox opens with one empty tab. Forcing me to got to «history -> recently closed windows -> restore» everytime I quit Firefox or shutdown the mac.

1. 1. 1. Device & build information

• Device: MacOs Tahoe 26
• Build version: firefox 148.0.2
• First seen version: MacOs Sequoia

1. 1. 1. Notes

Fresh migration from Win 11 to Mac. tabs, passwords, bookmarks, plugins migrated from win to mac. Attachments:

I had about 15 pinned tabs - unloaded - that I was saving for a research project. I shut my PC down and when powered up for the next session - all the pinned tabs were gone. I never thought to record the tabs via screen shot or something.

Is this normal - what are the limits of pinned tabs ? Do they expire in a day ? When the PC powers down ? When Firefox updates ?

Exactly what are the limits or boundaries for pinned tabs ?

In Firefox 152.0.5 under Windows 10, when I hover the mouse pointer over a tab, a balloon pops up showing the text that is on the tab. I find this extremely annoying as I can read what is on the tab. I have searched on the Mozilla site, and I have searched with Google, all to no avail. How can I disable those redundant popup balloons?

I really can't add to my Summary other than it's a fairly recent issue, started in May 2026, possible April. About.config is set to False. I hope some has a solution - it happens when I'm dealing with live incidents.

Let's say I have a group of 5 tabs. If I open a new tab from any of those tabs, I want that new tab to end up at the right of the group but not part of it.

Can I do that?

Before the update, I could use "cmd+shift+[number]" to open a new container tab. Now, nothing works. "cmd+t" opens a tab with "no container", which is completely different.

I already tried going to "about:keyboard", but opening a new container tab isn't even listed as an option.

Hello.

1. How to save a tab group without closing it? 2. How to make individual tabs in a tab group permanent? (So when you close a tab group only the permanent members are preserved.)

I am working with Firefox version 150 and have checked tab notes in the settings box but the feature is not available. Right clicking on the tab provides a drop down menu including tab notes as being new but it is grayed out. the release notes indicate it was supposed to be available through the labs in March but now it is the last week of April and it is not available.

My selected topic "settings" actually does not really describe my tabs problem. Even though I followed instructions for entering "about:unloads" the expected webpage did not appear. All I got was the same instructions and not a page that included the table and its unload button that was said to be above it. When I select the New Page tab and right click and then select three tabs, the right-click menu only shows the option to "close three tabs." There is not an option to unload three tabs. Yikes! And when I select one tab and click on the one option to unload one tab, the selected tab does not unload. The tab does not unload. The tab does not unload. It is still there. (???) This is very frustrating! I can only close tabs. So far I can only temporarily close them. Could the problem be that I am still using Windows 10? Please advise. Thanks for reading about my problem of not being able to unload my unwanted tabs.

In the last update the plus sign to open a new tab was moved from the left side to the far right of the screen. I find this very inconvenient. Just wondering if this bothers anyone else. Is there a way to roll back to the previous version of Firefox?

I have the same issue as this person https://support.mozilla.org/kn/questions/1373153. I HAVE the "Open previous windows and tabs" option on, i also DON'T have the "Clear history and cookies when closing the window" nor "Clear history when Firefox closes" nor "Always use private browsing mode" on so the solution doesn't work for me. Firefox won't open previous tabs when i close the window. However upon restarting my PC i have noticed that when i start up Firefox, my previous tabs are opened. So it seems the action of closing the window is doing something to prevent Firefox from opening the previous tabs again.

I use Tab Groups quite frequently. I am not a fan of the new functionality built into it.

So now if I close a group, one tab within that group will stay open if I was just on the page. It will not close until I go to another page and click close on the tab group again. Frustrating! Why cant I just open and close as usual?

Is there a way to get rid of this feature and still keep tab groups?

I just lost ALL my open tabs AGAIN!!! This's the 3rd time !!!!! Restore previous tabs IS NOT IN THE Menu > History AGAIN per Mozilla's method!! Frankly, I'm tired & overwrought this keeps happening WHEN IT'S NOT SUPPOSED TO!!

Now what cor-el?? I certainly hope you've a corrective answer. dCβ (;>{