Firefox Community Forum

The scrollbar slider isn't displaying correctly. If I grab the screen, zoom in, and look very carefully, it is possible to see that the slider is a very slightly different darker shade of grey to the rest of the scrollbar, but it's almost impossible to see, so something is clearly not working properly here. The scrollbar should be highly visible as it's the most often-clicked control of the entire browser.

iOS 26.1 on an iPhone SE; Google Maps 25.47.0. Links to apps don't open in-app. If I click a Google Maps link, it sends me to the App Store. If I click a link to Instagram, it sends me to the App Store. But I already have those apps! How do I make it work like it used to?

Environment - Device: Acer Neo 16 (PHN16-71), 2023 model - OS: Windows 11 23H2 (Build 22631.4974) - Browser: Firefox ESR 128.7.0esr (similar issue observed on 140esr) - Current version in use: Firefox ESR 143.0.4 (64-bit) - Graphics: Hybrid – Intel UMA + NVIDIA RTX 4060 - Drivers:

 - Intel UMA: 31.0.101.4146 (UMA-labeled)  
 - NVIDIA: 551.76 (GeForce Game Ready Driver)

Issue Description While using Firefox ESR (128.7.0esr and 140esr), the laptop’s built-in screen occasionally begins to flicker, and after prolonged usage—especially when browsing Facebook for tens of minutes—it gradually develops severe distortion, resembling water damage or ripple effects.

Key observations: - Screenshots appear completely normal, indicating the framebuffer is unaffected. - No external monitor has been tested yet; the issue is only observed on the built-in panel. - Rebooting temporarily resolves the issue, but it recurs unpredictably. - This issue never occurred on my older laptop (Acer V3-772G) using the same ESR versions.

Steps to Reproduce 1. Launch Firefox ESR (128.7.0esr or 140esr) 2. Browse Facebook continuously for tens of minutes 3. Screen begins to flicker, then gradually distorts 4. Take a screenshot → image is normal 5. Reboot → screen returns to normal

✅ Expected Behavior The screen should remain visually stable during browser usage, without flickering or distortion.

Actual Behavior The built-in screen flickers and eventually distorts, while screenshots remain unaffected. This suggests the issue may lie in the final stage of the display output pipeline, possibly involving the TCON (Timing Controller) reacting to GPU output or Firefox’s rendering behavior.

Additional Notes  

- Hardware acceleration was disabled in Firefox for testing — the issue still occurred (on older versions). - No similar behavior observed in Chrome or Edge. - BIOS screen appears normal, ruling out panel damage. - After upgrading to Firefox ESR 143.0.4 (64-bit), the distortion issue has not reappeared for two weeks, though minor flickering still occurs occasionally during browsing. - Interestingly, when distortion or flickering occurs while browsing Facebook, switching to another website immediately causes the screen to temporarily return to normal.

 This suggests the issue may be triggered by specific rendering patterns or GPU calls on certain web pages.

- This may indicate a rare interaction between Firefox ESR and specific hardware configurations (UMA → TCON → panel).

Hi, I'm having difficulty getting tabs to open as I prefer.

I have browser.tabs.insertAfterCurrent set to true.

When I right click on a link and select Open Link in New Tab, it does open the new tab next to the current one. However, if I then repeat to open another new tab, this appears to the right of the first one, rather than right next to the current tab.

So, if I open a series of tabs, they appear 1 2 3 4 5 next to current. I would like them to appear 5 4 3 2 1.

Is there another setting that is interfering? I wondered if the tab groups settings are making a difference?

Many thanks!

my firefox/mozilla updated without my knowledge. I turned the computer off and on and when it came back on it said it updated. My bookmark bar is missing along with all the drop down bookmarks I had..there was an arrow pointing down. I don't remember all of the bookmarks there were and there were lots. Some were for doctor portals. How can I get my bookmarks back I tried some online stuff but nothing works. Donna

Is it possible to make a donation to Mozilla without providing so much personal information? I got a message on Firefox today asking for a donation, but when I tried to do that, I was asked for my home address. It's a general rule of internet marketing that people who use the internet would rather do anything than pay for something, so it's bad psychology to impose unnecessary conditions when you're asking for a donation. I don't have to provide my home address when I make donations to other organisations, so why does Mozilla need my home address? I apologize if this is the wrong place to ask this question, but I can't find anywhere else to ask it!

Thanks,

Shaun.

your device identification does not tell me which devices you are actually identifying. You identify 4/5 devices, but I only have 2. - a new Nimo laptop (Rdn-Can68) and another relatively new Acer Nitro 50 desktop. Not sure what tag you have given for it. Previous systems failed and are gone. Some clarification would be nice!

I have loaded Firefox on another IMac and when I scan a document I lose the browser. I would like the browser to stay on the desktop so that I can attache the document direct to my email

Hi, I wanted to reduce height of tabs and remove borders in file userChrome.css.

So far this works for height, but was wanting to know if a negative value can be used to reduce further, Also tried some code to remove radius but it didn't work. Remove radius for selected tab and also hover on tab.

/* REDUCE HEIGHT OF TABS (VERTICAL TABS) */ .tabbrowser-tab { min-height: var(--tab-min-height) !important; max-height: var(--tab-min-height) !important; }

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Moderator note: This question has been edited to clarify the subject and correct the formatting.

When I close a tab, and try to find it in the recently closed tabs in the history, some i just closed, and without opening even a few others, they do not show up in the recently closed tabs list, while some I closed the day before are in there even when I filter to "Today" and that after" using Firefox for less than an hour and only had.

For one I think Today doesn't do that but rather the last 24 hours or similar.

It actually has been a problem for a very long time.

I can find most of them in the "Show all History", but that defeats the purpose of the recently closed tabs option.

I am using 143.0.4 (64-bit) AKA archlinux - 1.0, on Arch Linux I update every few days.

In my case today it was a Duck Duck Go search results page.

Hi, I set up the vertical tabs and I like them. However they're very unstable and so is the tab sidebar. The expand on hover feature only works for a short time. Then the x to close a tab disappears and the sidebar gets stuck open or closed. If it gets stuck open, it covers the settings and AI and history sidebars so I need to close it manually to use them. Yesterday I lost 3 of my 6 pinned tabs. After closing and opening FF, they were just gone.

Also my tab groups will suddenly disappear. This started in the previous version and still happens, and I lose the sites I had collected. Plus FF has been very slow to load.

So yesterday I gave up and reverted to horizontal tabs. Like magic FF suddenly worked perfectly and very fast. I'm not enough of a techie to have any idea of what is causing what and would really appreciate any advice.