Firefox Community Forum

Hi. I'm still new to Firefox and don't really know the settings very well. I recently switched over to using it and realized that when I use most drop down boxes the background of the drop down menu is black, but the text is white and the selection box (when you hover over the item) is also white. Making whatever I'm hovering over very hard to see. I'm wondering if I have a strange setting turned on or not?

Settings wise I have Firefox set to dark mode, not the auto. But when I use the auto it still happens. Trying it in safe mode it still happens. Iv tried to research this a little myself. And read something about the proton setting and turning that from true to false. But this also did not work.

Is there any way to fix this? I just need the text to be a different color or the selection box (when you hover over it) to be a different color.

Attached are two screenshots of what I'm seeing

Firefox recently started "eating" my tabs: closing them without my permission. There are several tabs I want to keep open at all times, because I refer to them from time to time throughout the day, but Firefox closes them from time to time. I googled the issue and the AI directed me to two settings: browser.tabs.unloadOnLowMemory and browser.tabs.min_inactive_duration_before_unload. It suggested setting the first one to "false" and increasing the duration of the second, or setting it to "false." However, the setting will only accept numeric values.

Since I am not having low memory issues, I want Firefox to leave my tabs alone. Is there any way to actually do this? If not, it would be really nice if Firefox developers reversed this intrusive change.

Thank you, Terry

When testing our web application, I can consistently get the tab to crash in Firefox (not other browsers). This happens even when running in Troubleshoot mode.

A few of the submitted crashes: bp-f1e47e32-aa7e-4080-880c-34f160250710 bp-622b9363-fa50-4b15-b605-87c3e0250702

Can anyone tell what is causing it to crash, and if we can do something to fix it?

I usually use Nightly as my default browser in a Windows 11 system. Recently I started to get a new error message showing up when I try to select multiple messages in Yahoo e-mail. I select them by clicking on the first message, then holding down Shift and clicking on the last message in the range. That should turn on the selection boxes for all the messages between the two.

Now, when I press the Shift key, I get an error box right on top of where my mouse cursor is, so it interferes with me. The top of the box says "mail.yahoo.com", which is the web-site I'm signed in on. Then it has a link with the text "Login - Sign in to Yahoo". Below that is an ad for all the wonderful things I can get by signing in to Yahoo. At the bottom is an error message, "We can't generate key points for this webpage."

I tried the same action in the current General Release of Firefox, v140, and this does not happen. I suspect that this is an intrusion by some sort of AI software, but I don't know what setting might have been activated to turn this on. Does anyone have any idea how to turn it off?

When I forward or backward a video on Youtube, using J, L keys, arrow keys or mouse click, or pause & unpause, there is this fade in effect on the sound. The volume isn't constant. Volume starts at low and it gradually increases. I don't have this issue on any other browser or application.

To view my Firefox browsing history, I click the three horizontal lines icon (in the top right corner of the window) to open the Menu panel. I then click History then click Manage History.

How can I make the font larger?

(Ctrl++ does not increase the zoom-level) (Zoom does not increase the zoom-level)

I have a desktop PC Firefox 140.0.4 (64-bit) Windows 11

Hi. I changed my default to Firefox but when I open a tab that darn Yahoo keeps coming up. I restarted my computer and everything. How can I get Firefox to be my search engine?

There going down like flies chief I have no idea how long they'll last or what the root cause is but I have report numbers listed below: bp-6a2f6577-50b4-4503-aa6f-edc0c0250714 7/14/2025, 5:44 AM bp-cca0da19-acc6-4699-b2fd-f78070250714 7/14/2025, 5:44 AM bp-3afd947d-1ab0-4e44-9fee-f4cbb0250714 7/14/2025, 1:05 AM bp-9399b8e9-a389-41bb-9231-a95d50250714 7/14/2025, 3:54 PM bp-8e2c1005-1c7b-49ea-8a50-dbb780250714 7/14/2025, 3:55 PM bp-d270fbee-4e08-4c3b-a6ce-870400250714 7/14/2025, 3:55 PM bp-1cd7a43d-c702-4a15-bb9f-396ef0250714 7/14/2025, 3:56 PM bp-e6cd9efa-9998-4408-872a-713c60250714 7/14/2025, 3:56 PM bp-23709997-e2af-4463-b1ce-b7a4f0250714 7/14/2025, 3:56 PM bp-d46d3db6-876e-4794-a500-f1a590250714 7/14/2025, 3:56 PM bp-723ea32e-8da6-46c0-bbc2-ea5190250714 7/14/2025, 3:56 PM bp-a8860709-a511-44de-9f6a-318560250714 7/14/2025, 3:56 PM bp-fa8c5f4b-5b15-46d1-8df6-ae76f0250714 7/14/2025, 3:56 PM bp-bc81e502-f570-4e59-86b3-e2d720250714 7/14/2025, 3:56 PM bp-ddfeae99-8833-4297-9d0c-010d20250714 7/14/2025, 3:56 PM

Hello! I've been seeing some strange behavior on firefox launch or on new profile launch. There is a popup during startup, can't see it on the screen but I can see it in tray. Is this normal or no? I observed it on two different hp notebooks so far.

Since a recent update, whenever I try to go to ufc.om, Firefox shows me the error in the attached image. It used to display ufc.com without issues before the update [ don't remember which update ].

Other browsers [ Chrome and Edge ] display ufc.com without issues.

I have created several groups (currently 4 with a total of 11 tabs combined). When a group is closed, do those tabs become inactive, reducing their impact on Firefox/computer performance, or do they still remain active and impacting overall performance?

You seriously need to remove the AUTOMATIC tab grouping, it's annoying as hell!

I know there's a workaround, but that's beside the point. You don't break into someones home in order to re-organize it, that's just bad practice all around.

working with miro site using firefox is terrible -

- too long downloading and redirecting - half of times strange errors occurs - https://disk.yandex.ru/i/PFQTbYdKGSKS0Q - no problem with chrome or edge - https://disk.yandex.ru/i/XBY6SIzk_gGBYw - just search all troubles - https://www.google.com/search?q=miro+is+not+working+firefox