Firefox Community Forum

Firefox reports that my theme is dark no matter what if I set it to _Automatic_. This results on any website that follows the CSS rule to prefer system theme to also be in dark mode. The only way I can get Firefox to use _Light_ is to manually select that option.

I have observed this behavior on MacOS Sequioa and also Tahoe (after a clean install). Other browsers I tested (Chrome, Safari) are not impacted by this behavior.

Previously, I made a custom scale ".3,.5,.6,.7, .71, .72, .73, .74, .75, .76, .77,.78,.79, .8,.9,1," and thus using Ctrl + the mouse wheel allowed you to set any scale in this way, since when "Ctrl + mouse wheel" the page was scaled by 10% regardless of the values. That is, I could set 74% and use Ctrl + mouse wheel to make the page scale 64% or 84%, even without the available value. Now I can't do this because now my "Ctrl + mouse wheel" doesn't increase/decrease 10%, but just scrolls through the set values. How to get everything back? It's very annoying, I can't use it.

Web pages that are supposed to contain emojis are blank. I can highlight where emojis are supposed to be shown but the actual images of the emojis aren't there. about:config font.name-list.emoji correctly contains "Apple Color Emoji" If it is relevant, this has been a bug/issue that has persisted for a couple of months now (can't name an exact date).

I really enjoy the new sidebar revamp, but I've had an issue with it recently that I haven't been able to find a solution for. Typically, the settings gear is supposed to be situated near the bottom of bar. However, as demonstrated in the attached image, it is at the top near the bookmarks and history buttons. I have tried reinstalling the browser from scratch, turning the sidebar on and off, turning vertical tabs on and off, and even getting rid of my custom CSS theme for a time. None of these have worked. If anyone knows what the root of this issue is, I'd really appreciate the help.

I am on Linux Mint 21.2, and I just updated Firefox (141.0). Now, the bookmarks bar, toolbar, and the tabs (everything above the displayed page), as well as the menu, bookmarks menu, and sidebar, are in light mode even though I have dark mode set (They were dark before the update). I tried playing with the Dark Mode settings to no avail. My system is set to dark mode in general. Are others experiencing this? Is there some sort of fix?

In May 2025 all browsers should have removed the default styling for the h1 element when it is nested in a sectioning element (article, aside, nav, section). I went into Firefox Dev Editions user-agent style sheet and noticed that the styling for nested h1 elements is still the same. I'm wondering why that is the case, since I was under the impression that all the major browsers had completed make the necessary adjustments at the end of May 2025.

Hello all:

Just downloaded version 140 and ran into an immediate "visual/appearance" problem with regard to the background color(s) of the sidebar bookmarks view. Many themes now have totally dark sidebar colors and not readable (see screenshot image upload with this posting). I always have my bookmarks (almost 1200 of them) displayed in my sidebar, and this is the first time an issue like this has arisen with a Firefox update.

To remedy this scenario, I must use very light colored themes that have a white background when you bring up the sidebar bookmarks. If not, everything is totally dark and unreadable.

Any ideas or help on this one?

Basically title.

Every time I close the browser and re-open it, the favicons disappear. I use the favicons to navigate to websites on my bookmark toolbar, but they're missing from my regular bookmarks, too.

I found an old thread that appeared similar, and the solution was to take a working copy of the favicons.db file and re-import it if it breaks (while the browser application is closed). However, this did not work.

Any help would be greatly appreciated.