Forum der Gemeinschaft Firefox

I've been using Firefox for a couple months now, and I just ran into this problem today with English text nearby Japanese text: https://files.catbox.moe/diw4y3.png

• It's not affecting Japanese text
• It's not exclusive to Japanese websites (it's present in one email in gmail, but not all of them)
• I haven't seen it on any Japanese websites
• It's also present in some add-ons that generate text (Checker Plus for Gmail, Yomichan)
• Turning off all add-ons doesn't fix it, but opening the page in a private window does fix it

Firefox 155.0.1 (64-bit), Windows 11 Pro

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?

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.

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!!!

This shield on the search bar is making firefox on win11 unusable for me. I set browser.urlbar.trustPanel.featureGate = false but it still displays. Why do they keep making these changes, it seems like every month there is a new change requiring setting changes,

When Firefox is running in a non-maximized window, an unwanted empty space appears on the left side of the tab bar, before the first tab.

This space is not present when the Firefox window is maximized. It appears automatically whenever the window is restored to a smaller/non-maximized size.

The issue affects the tab bar layout and leaves a noticeable unused area on the left side of the tabs. I would like to know whether this is expected behavior or a UI bug.

Firefox version: 155.0 64-bit Operating system: WINDOWS 11 25H2 64-bit

Since the latest update, the findbar is not displaying for me. I hit ctrl+f and I can type a word and it will highlight on the page, but I can't see the findbar itself.

In my about:config, the only modified findbar preferences I have modified are:

userchrome.floating-findbar-on-right userchrome.floating-findbar-on-right.enabled

I have tried changing them from true to false, but it doesn't fix the issue.

Now when I click on something in Firefox, for example a Facebook post, it opens in full-screen mode, not just in the selected window size. When the new window opens in full screen, it covers other stuff already on the desktop. It's f'ing annoying. How do I choose to have new windows open at the existing window size?

Coming from Vivaldi, and prior to that Opera Presto. I wonder if there is a way to customize the sidebar to get the bookmark folder to "Expand on hover", or to expand the sidebar button to a few pixels on the entire left side, and keep the tabs on top?

I know this was possible last time I used FF, maybe 10 years ago between Presto and Vivaldi. But I don’t remember if it was a browser config or add-on!?