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I am on version 155 of the browser, and the sidebar is not showing up for me. Clicking the sidebar toggle button also does nothing. I've tried going into settings and toggling the show sidebar option, but that also doesn't do anything, as if the sidebar feature doesn't exist. Toggling vertical tabs just makes the tab bar disappear, and I've tried both the options menu and right-clicking the side bar toggle button. Is there an error, or am I missing something?

I've searched & waited past few years for an Extension to make the TOOLBAR FONTS larger, none found. Reason being many of us are using larger monitors and TV's and we're usually sitting or standing further away from the screen. Problem is the font size cannot be changed, they stay small and hard to read comfortably. __YES I've reset my operating systems font size, that does not work in Firefox TOOLBARS. __Changing the "firefox/addon/theme-font-size-changer" has been eliminated by Firefox. __Changing the "layout.css.devPixelsPerPx" to a larger number increases the whole TOOLBAR. I just want the FONT size larger. __(someone suggested) NO, I'm not going to setup 2 monitors.

Sure would like this issue fixed. In the pix below, it has been done.

Up until recently (apologies, I do not know which version) when editing userContent.css on Debian 12 in the ' Developer Tools ' I could just use CTRL+S to save my changes and all was well.

Now it appears to have forgotten where it loaded in the first place, because (when using the shortcut or the 'save' link under the name on the left) it just opens the user's home folder at its root level or ' ~/ ' ...

Is this a bug that I should raise at bugzilla? Or has another bug fix messed this functionality up somewhat?

This is the ' mozilla-deb ' / ' Mozilla Firefox Debian Package ' currently at version 154.0 which is usually updated weekly.

From time to time, sometimes after Firefox updates, I get unintelligible characters on tabs, search bar on Firefox. It gets more frustrating because the issue extends to the Settings menu, so applying the fixes I see on the web is definitely not easy.

I am on macOS, a newer chip and below is what I tried.

Restarting Firefox Checking the library for duplicate font installations. Disabling the extensions Starting Firefox on troubleshoot mode Uninstalling/reinstalling Firefox Uncheck Use recommended performance settings (blindfolded by using the search panel under Firefox Settings) Uncheck Use hardware acceleration when available (blindfolded by using the search panel under Firefox Settings)

I noticed that my Tab background color doesn't change after recent Firefox updates.

I have this code (css - chrome) to change the color of the active tab to green and it no longer working.

/* Start code: Change color of active tab to Green and the inactive to default*/ tab[selected="true"] *{ background-color: #00c100 !important; /*Green */ font-size:10pt !important; font-weight: 650 !important; color: black !important; }

Any help in fixing this is appreciated. Regards,

this old man cannot find the home button? I thought i had looked everywhere i could imagine but it must be right where i couldn`t imagine, I would certainly appreciate some help. Thank you for your time and effort.

I just had to reinstall firefox today, and now my bookmarks sidebar is on the right of the browser window. I want it back on the left side where it belongs, but I can't find any instructions on how to do that. I really don't like this. Am I going to need to just switch browsers altogether, or can I get my old firefox setup back?

I use the setting brower.search.widget.new = false to customize my search bar. Since the latest update of Firefox (Firefox 154), I noticed that spacing between search results is larger and I don't like it as much. I am hoping to revert to the previous version where the spacing is more tight and easier to navigate. The first pic is Firefox 154 and the second is a previous version (147).

Hello! My Firefox browser is currently in a state where all fonts/letters in the Firefox interface (bookmark bar, settings, about page, website name...) are replaced by undecipherable characters.

I've searched for similar problems already and tried so far the following steps to resolve, unsuccesfully...

• Opening the browser in Safe Mode / Deactivating all extensions
• Uninstalling and reinstalling Firefox

• Disabling hardware acceleration
• Trying on another profile




When I copy paste said text to another window (ex: Notepad, Chrome Browser…) it appears properly. And as you can see in the screenshots below the text in actual websites is readable -- only the browser's interface, setting, address bar... are scrambled.

Does that bug rings any bell? Do you have any other troubleshooting steps I should try to resolve this? Any help will be appreciated! : )

Hello:FF dev 156.0b3 sept 2026. w11p. Is there a simple way to reduce the number of items/cut back the list of items appearing in the context menu (R mouse button)? A 6-yr-old post on reddit says to use userchrome.css. This advice may no longer work? And the instructions seem a little confusing to me. Thank you.

The autocomplete dropdowns for form fields have recently changed appearance, and I strongly prefer the previous, simple design.

The new version has:

• Clock icons next to autocomplete/history entries
• Much more vertical padding, making the list unnecessarily large
• Rounded "pill-shaped" highlighting when hovering over an entry

The previous autocomplete list was much more compact and clean, without the clock icons, excessive padding or rounded hover backgrounds.

Is there currently a setting, `about:config` preference or other supported way to restore the old autocomplete list appearance?

Ideally, I would like to use the previous style:

• No clock icons
• Compact rows with the previous amount of padding
• No rounded/pill-shaped hover effect
• Otherwise retain the existing autocomplete functionality

If there is no setting to restore the old appearance, could an option be added to allow users to choose between the old and new autocomplete UI?

My browser window (not my private browser window, however, is starting to show text in web pages as a reverse Hebrew font. I can't figure out why. Translations are turned off and it happens on a lot of different sites. There is a screenshot attached. How can I make it stop!!!

I know I will probably have to live with that (nonsense) new UI. But how to at least disable UI animations, so that the new menu appears immediately when I open it? I have reduced animations enabled in Android settings but firefox doesn't honor it.

This is absolutely driving me out of my mind, I no longer have a tiny drag space above my tabs- when I 'customizem toolbar' and try to add a flexible space above them, I can't. The only solution is to constantly have the menu bar turned on, and at that point I'd just opt out of FF. I cannot figure out why this happened, and I cannot seem to fix it- please help me