Firefox 技術支援討論區

New Tabs and even sometimes first tab do not load any page and become just "dead"

Open in New Tab and Ctr T is like a roll of dice now, the same page sometimes loads sometimes doesn't, usually closing FF and re-opening solves it.

This has been happening quite frequently so I tried several builds and solutions, uninstalled and reinstalled with new profile, safe mode, no add-ons or themes, both 32 and 64 bit, ESR, etc.. (I'm on Win10 64 bit)

If anyone is experiencing something similar or have an idea let me know please I've been using Firefox for longer than I remember and I would hate to switch now

Hi,

I always have dozens of tabs opened, if not hundreds. They have vanished. I’ve been trying to follow the topics on the matter, such as the one named ‘Session won't load’ (questions/1254740), to no avail.

Finally, this time I remembered not to close Firefox when I saw my tabs where suddenly missing. I’ve never seen the ‘Restore the previous session’ on the Firefox menu, and neither did I this time. Without closing the browser, I did a backup of the ‘sessionstore-backups’ folder. It contains:

‘previous.jsonlz4’, from 22/11/2020 17:42 ‘recovery.baklz4’, from 22/11/2020 18:57 ‘recovery.jsonlz4’ from 22/11/2020 18:58 ‘upgrade.jsonlz4-20201027185343’ from 31/10/2020 13:42 ‘upgrade.jsonlz4-20201108180448’ from 10/11/2020 15:05 ‘upgrade.jsonlz4-20201112153044’ from 22/11/2020 10:34

The one I need is ‘previous.jsonlz4’, since by 18:57 I’ve already lost my tabs. From the update backups I think I could also use the one from 22/11. In any case, I don’t understand what I am doing wrong so as to recover the ‘previous.jsonlz4’. This is what I’ve tried from different threads on my profile folder:

The ‘-backup’ and ‘OLD’ changes belong to different attempts

- Rename (on ‘sessionstore-backups’ folder) ‘recovery.jsonlz4’ and ‘recovery.baklz4’ to ‘recovery-backup.jsonlz4’ and ‘recovery-backup.baklz4’, and also tried with ‘recoveryOLD.jsonlz4’ and ‘recoveryOLD.baklz4’ - Rename ‘sessionstore-backups’ folder to ‘sessionstore-backupsOLD’ - Rename (on the main profile folder) ‘sessionstore.jsonlz4’ file to‘sessionstore-backup.jsonlz4’, and also tried with ‘sessionstoreOLD.jsonlz4’ - Copy/paste the ‘previous.jsonlz4’ file into the main profile folder. - Rename ‘previous.jsonlz4’ to ‘sessionstore.jsonlz4’

Nothing has worked. Once followed the steps, Firefox keeps opening my startup page. Note that it does not restore my previous session (that is, some tabs regarding this same subject), but my startup page, which means my attempts are having some effect, although not the desired one. I do have the ‘Restore previous session’ checkmarked in ‘Setting/General/Startup.

I also tried to replace ‘recovery.baklz4’ (on ‘sessionstore-backups’ folder) with ‘previous.jsonlz4’, from 22/11/2020 17:42, hoping to be prompted with the ‘Well, this is embarrassing’ + ’Restore’ window. I had no success.

I’ve been trying to recover my tabs for hour by now and don’t find what I am doing wrong. Why does Firefox refuse to load my ‘previous.jsonlz4’ file? Am I missing something? Maybe ‘previous.jsonlz4’ is corrupted or something? Should I try to use the ‘upgrade.jsonlz4-20201112153044’ from 22/11/2020 10:34 file? (Although I would lose some information)

Some people talk about a ‘History > Restore Previous Session’. I cannot find anything similar.

Thank you very much

When closing the last tab, instead of closing, Firefox restores a tab from a previous session. This session history can also get queued, so if I have closed Firefox with a tab open on more than one occasion, it will restore that many times. Once closing this restored tab, it does appear to remove it from the old session 'queue'.

When I close the last tab, it should _never_ restore an old tab. I'm fine with an about:blank or something similar (closing the browser is preferred), but of all the actions to restore a session, closing the last tab is wildly unexpected.

With the latest update, my tabs are now a complete blank space with tiny little words. How can I get something back, like a border, to define them again? Thanks for your help.

My firefox installed a new update, 89, and now my tabs are missing, except that the active tab is floating down at the center bottom of the screen. i can still navigate with keyboard shortcuts, but i don't know how many i have open, what they are, and personally DO NOT like navigating with shortcuts if i don't have to.

why is it necessary to keep messing with tabs? weren't they just fine below the address bar back in the day? How is ruining the user experience worth whatever was even trying to be done here?

image is how my firefox looks right now

Please help me get rid of the stupid and ugly Tab bar space on newest Firefox. I hate Tabs and now there is a big space above the address bar for Tabs. I have looked everywhere for a way to turn it off like it has been since Tabs came out. I only want new windows if I want a new window.

If I can't turn that huge space gap off is there any way to go back to what I had before the last update without messing everything up? Why did someone decide to make the browser window smaller and waste that space by making the browser bigger....

Sorry if I sound cranky but, I started using Netscape Navigator 1.0 and every version since and this is the worse thing that has ever been done to a browser... Thank you for any help you can give me!

Hello, it is enough to search "version 89 visuals" in the help forum to find dozens of topic complaining how awful it looks, and the reduced functionality, content on screen and efficiency.

Luckily in one of the threads I found solution, and links to articles to fix most of the biggest issues:

As a temporary tactic to buy time, you can use a preference to revert the tab bar to its older appearance. This is just for Firefox 89, so you have a month to keep an eye out for the next workaround. To set that up: (1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk. (2) In the search box in the page, type or paste proton (or full browser.proton.enabled) (3) Double-click the preference to switch between true (new Proton style) and false (old Photon style) Since this was kept in just for testing, there might be some occasional glitches.

Here the options I changed - set false to all.

   browser.proton.contextmenus.enabled
   browser.proton.doorhangers.enabled
   browser.proton.enabled
   browser.proton.modals.enabled
   browser.proton.places-tooltip.enabled

+ even further reduction of the spaces -> browser.uidensity -> 1

I expect the new Proton view is inspired by touch screens - and is more optimized for tablets, giving more space around individual options, with extra space around them - to make sure you hit the right option with your finger. The downside is we get less visible options on the screen, as now each option takes more space - and it is absolutely awful and less visible for people using desktop mode, and using the more precise mouse and/or keyboard.

And here a list of the problems and annoyances in V89, and why they are a problem (and these are only the ones I noticed so far - attached is a screenshot collage of the issues.

1. Tabs which play audio no longer show that they play audio, unless I hover on top of them - which is a big problem if you have 20 tabs, and are searching which one auto-played some audio. In the previous version each tab playing audio had the audio icon on top of it. 2. My bookmarks take much more space on my screen, and while previously I organized them to fit perfectly to it, now are going outside of it, and I have to (unnecessarily) scroll to find more. 3. On YouTube There was a "delete video" button next to each video in my "watch later" list, and I was able to quickly delete the watched ones. Now I have to click on the 3 dots, and then on the trash bin button to delete. Much slower an annoying. Return to the old vision (sadly I cannot find a way to fix this yet)

This totally failed visualization must IMMEDIATELY be reversed, and you must add option in the VIEW menu - which switches between the old DESKTOP view (version 88 style), and new TABLET view (V89 style).

And it must not be allowed that you disable the browser.proton.enabled option in the next update, as this will force us to use only the new awful view, and give us 3 options:

1. Revert to 88. I have already backed up my profile, and downloaded it, in case V90 ruins the view permanently. This also opens us to security risks - so I can allow this for no more than 2-3 months, in hope you fix this fail. 2. Switch browser. Move to Vivaldi (which I use at work) or Brave, if you refuse to fix the fail. 3. Accept the awful view - not going to happen to me. I am using Mozilla since Netscape, but this fail is infuriating enough to make me switch if made permanent / even worse.

Firefox open tweeter's tabs only in private window, can i so something to fix this and be able to open it even in standard window please ?

im on mac os X 10,9,5 with firefox 78,15,0esr

Got updated to FF71 and my Tabs which I had moved under address bar got moved back above the address bar. (Had moved them under by creating userChrome.css file which no longer works) Is there anyway I can get the tabs again to display to under the address bar? It's just so confusing with the tabs on top. I appreciate any help!

Last week the Tab + button disappeared on Firefox browser. Restoring the defaults does not change this. I was able to add a new tab button to the toolbar, but that has also now disappeared. Please can someone help?

Hello, I'd like to open url links clicked from any program in a private tab. Firefox is my default browser. Links open in new tab, which is okay. I browse in private mode all of the time, but clicking links opens in normal tab, then it cashes the content, cashes history etc. Most of the stuff (from for example discord) is a one time thing, silly and probably even useless stuff.

Is there a possible way to force windows10 to use "firefox.exe -private" as the default handler to open firefox ? I don't really mind if it opens a new window instead of new tab as long as it remains private.

Thank You for Your time.

Problem began with not being able to open a new tab. I updated to FF 78.0.2.

Now I still cannot open a new tab and my tabs are superimposed on my bookmark folders. Clicking on that menu bar opens a folder, not a tab. FF is unusable.

Also, the three coloured buttons, appear down on the webpage rather than in the menu bar. In order to get them out of there, I have to create a title bar that holds only them and the title of the page I'm on which seems a waste of space. Can I get them on the bar next to the search box?

Image attached.

Thanks for any help. Greatly appreciated.

When I use the address bar or search bar to search it displays the website in the last tab that's opened instead of opening a new tab, if I use a bookmark it opens a new tab but not when i use the address or search bar do you know how to fix this?

When I access Task Manager from the Firefox menu or just type about:performance the screen comes up, but it only shows information for Task Manager itself (low impact) but doesn't show information about open tabs / websites or add-ons. I was trying to use it to see if one of my open tabs was impacting browser performance. I have the latest version of Firefox.

I have open half a dozen or so tabs related to one subject. I would like to put them all into one "super tab", such that only the super tab shows as an open tab. Then, by clicking on that tab, it would show the tabs within it, any one or more of which could be selected. Is this possible, and if so how is it done? Perhaps there's an add-on or extension that would do this.

I have already created a multi-tab bookmark that sorta, maybe accomplishes the same thing. But it's not as convenient as what I envision as described above.

Thanks for any advice or words of wisdom.

Hi, this isn't quite a tab recovery as the session hasn't ended, it just won't display the window. But it's in private browsing so I don't want to close the window since I understand that nothing will be saved from that session. But is there somewhere I can access a list of tabs while the session still exists? I'd hate to lose them all.

6/7/21 Firefox just did an update on my computer. Before, the tool bar at the top was dark gray and the tabs were easily distinguishable. Now the entire area above the URL is light gray. I would prefer more contrast between the tool bar and the tabs. What happened? Thank you.

Dear Mozilla Support,

After some update (I think from 89.0.0 version of Mozilla Firefox - this version with new looks of tabs) I notice flickering on the tab when I loading website or refresh website. This looks very strange. Like I said I dindn't notice any issue with flickering on previous Mozilla Firefox versions. Only with these new versions with new look of the tabs. I didn't remember if it was 89.0.0 version or 90.0.0 version. I don't know if it is problem with the machine but I didn't notice this issue on another computer with 90.0.2 Firefox version but with Windows 10 OS. I also noticed this issue with Firefox 90.0.0.2 with Windows 7 OS on another computer so I don't know if this is problem with two computers or Firefox itself. Can you help me?

Yours faithfully, Piotr

G'Day,

I earlier posted with respect to getting tabs to appear below the address and search bars on the browser. I managed to solve that issue; however, the solution has produced a curious side effect.

When the browser has entered Full-Screen, the tabs-bar does not disappear and appears as it would in a normal browser window while both the address and search bars have been hidden. Is there some way to fix this?

As well, on a Windows 8.1 lap-top, using the CSS below, the very top of the browser has been cut off. It is not possible to see the browser control icons nor is the menu-bar visible.

A screen capture is attached as well as the CSS which was suggested in my earlier post about getting the tabs below the address bar.

Thanks,

Jim

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

/* TABS: bottom - Firefox 65 and later - updated for 89+ */ /* https://searchfox.org/mozilla-release/source/browser/themes/shared/tabs.inc.css */ /* https://developer.mozilla.org/en-US/docs/Tools/Browser_Toolbox */

/* ROOT - VARS */ /* you can adjust the CSS variables until it looks correct */ /* you can use the Browser Toolbox to get the toolbar heights */

• |*:root {

 --tab-toolbar-navbar-overlap: 0px !important;

 --tab-min-height: 40px !important;
 --tab-min-width:  50px !important;

 --tab-caption: -5px; /* caption buttons on tab bar */
 --tab-adjust:   3px; /* adjust tab bar */

 --menubar-height: 40px; /*40px|41px=11px; caption buttons on menubar*/
 --navbar-height:  40px; /*31px*/
 --bookmarkbar-height: 26px;

 --tabbar-top: calc(var(--menubar-height) + var(--navbar-height) + var(--bookmarkbar-height) + var(--tab-adjust)); /*89+*/

}

/* in case you enable extra toolbars in full screen mode */

• |*:root[inFullscreen] {

 --tab-adjust: 3px;
 --menubar-height: 45px; /*30px*/
 --navbar-height:  45px; /*31px*/
 --bookmarkbar-height: 0px; /*26px*/
 --tabbar-top: calc(var(--menubar-height) + var(--navbar-height) + var(--bookmarkbar-height) + var(--tab-adjust)); /*89+*/

}

/* TAB BAR - below nav-bar */

1. navigator-toolbox toolbar:not(#nav-bar):not(#toolbar-menubar) {-moz-box-ordinal-group:10}
2. TabsToolbar {-moz-box-ordinal-group:1000}

1. TabsToolbar {

 display: block !important;
 position: absolute !important;

/* bottom: 0 !important; /* 68-88: BOTTOM */

 top: var(--tabbar-top);  /* 89+: TOP */
 width: 100vw !important;

}

1. tabbrowser-tabs {

 width: 100vw !important;

}

/* navigator-toolbox - PADDING */

• |*:root:not([chromehidden*="toolbar"]) #navigator-toolbox {

 padding-bottom: calc(var(--tab-min-height) + 1px) !important; /*ADJUST*/
 background-color: var(--toolbar-bgcolor) !important;

}

/* TabsToolbar with menubar and titlebar hidden - rules for Firefox 65-73 */

• |*:root[tabsintitlebar]:not([inFullscreen="true"]):not([sizemode="maximized"])

#toolbar-menubar[autohide="true"] ~ #TabsToolbar{

}

/* TABS: height */

1. tabbrowser-tabs,
2. tabbrowser-tabs > .tabbrowser-arrowscrollbox,

.tabbrowser-tabs[positionpinnedtabs] > .tabbrowser-tab[pinned] {

 min-height: var(--tab-min-height) !important;
 max-height: var(--tab-min-height) !important;

}

1. TabsToolbar {

 height: var(--tab-min-height) !important;
 margin-bottom: 1px !important;
 box-shadow: ThreeDShadow 0 -1px inset, -moz-dialog 0 1px !important; /*OPTIONAL*/
 background-color: var(--toolbar-bgcolor) !important;
 color:            var(--toolbar-color) !important;
 z-index: 1 !important;

}

/* indicators *//*

• |*:root[privatebrowsingmode=temporary] .private-browsing-indicator {

 position: absolute !important;
 display: block !important;
 right: 0px !important;
 bottom: 0px !important;
 width: 14px !important;
 pointer-events: none !important;

}

• /

.private-browsing-indicator {display: none !important;} .accessibility-indicator {display: none !important;}

/* Indicators - HIDE *//*

• |*:root:not([accessibilitymode]) .accessibility-indicator {display: none !important}
• |*:root:not([privatebrowsingmode=temporary]) .private-browsing-indicator {display: none !important}
• /

/* Drag Space */ .titlebar-spacer[type="pre-tabs"], .titlebar-spacer[type="post-tabs"] {

 width: 20px !important;

}

/* Override vertical shifts when moving a tab */

1. navigator-toolbox[movingtab] > #titlebar > #TabsToolbar {

 padding-bottom: unset !important;

}

1. navigator-toolbox[movingtab] #tabbrowser-tabs {

 padding-bottom: unset !important;
 margin-bottom: unset !important;

}

1. navigator-toolbox[movingtab] > #nav-bar {

 margin-top: unset !important;

}

/* Hide window-controls and caption buttons on Tab Bar */

1. TabsToolbar #window-controls {display: none !important;}
2. TabsToolbar .titlebar-buttonbox-container {display: none !important;}