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I have a lot of Firefox windows and tabs open, and I really don't want to lose my session.

I wanted to open a webpage in Firefox in fullscreen mode. But evidently there's some kind of serious flaw in Firefox that makes it incapable of opening webpages in fullscreen mode. Everyone says the only workaround is to open the webpage in kiosk mode. So I tried it.

But now I have two big problems:

1. One of my Firefox windows, with all its tabs, is stuck in kiosk mode. (Even if I close the window and then restore it with Ctrl+Shift+T, it's still in kiosk mode.)

2. All new Firefox windows I open with Ctrl+N are also stuck in kiosk mode.

I don't know what to do, and I'd really appreciate any help. Thanks!

Upon opening the NY Times website, page 1 flashes briefly. Then the screen locks in on a commercial which prevents further access to the paper. I cannot escape the ad.

This does not happen with Safari or Chrome.

Help!

When I click on NY Times link, I get this message: You have been blocked from The New York Times because we suspect that you're a robot. I'm just an old guy with a low tolerance level for tech glitches. Any help greatly appreciated!

I called NYT Support, which tells me it must be a Firefox issue since I can open in Chrome, Safari. I thought it might because I have the Enhanced Tracking Protection box checked, but unchecking does nothing.

Out of ideas.

Hi,

I started using the 'Vertical tabs' option to manage my tabs. I prefer it over the horizontal bar. However, I noticed that when going fullscreen (F11) the vertical tabs are not removed. This is different from horizontal tabs, which are removed from the UI when you press F11.

I think that's because vertical tabs are tied to the sidebar altogether. Is there an alternative to have the vertical tabs work the same as horizontal tabs?

Horizontal bar behaviour in fullscreen:

- The horizontal bar disappears when going fullscreen (F11) - The horizontal bar reappears when hovering the mouse over the top of the screen (which is great!)

Vertical bar behaviour in fullscreen:

- The vertical bar does not disappear and gets in the way of the fullscreen (F11) experience - Checking the setting "Expand sidebar on hover" does not replicate the behaviour of the horizontal bar reappearing upon hovering the mouse. Instead, the smaller version of the sidebar remains and it expands to it's full size when the mouse hovers over it - The only option is to remove the sidebar altogether, which means going back to horizontal tabs

On any video player that has a gradient, it breaks when I full-screen the video, showing as solid semi-opaque bars instead of the intended gradients.

This happens on any video player I've used that has a gradient, and is most noticeable on YouTube due to the double gradient.

It displays normally when I use snipping tool, so apologies for the bad quality on the second image.

I use Ublock Origin and Dark Reader, but this behaviour doesn't change when either is disabled.

I don't know if this is a Google account problem or Thunderbird. I have gmail attached to Thunderbird. I changed my Google password. Upon launching T-bird, I received a box titled "Enter credentials for bXXx@gmail.com on imap.gmail.com"

Google is asking for 2-step verification but is not allowing me to use the simplest of verification - a text message. That option is grayed out.

Can I make changes directly in Thunderbird and this imap and avoid this Google nonsense?

Thanks. Cathy

Hi,

I am enjoying the new sidebar with ChatGPT but having a small issue due to Enter being new line rather than send message. At the moment I have not found a keyboard key / combination to send a message and instead have to use my mouse to click send.

I would like to suggest an option to have either Enter being send message and Shift + Enter being new line, or the reverse of Enter is new line and Shift Enter is send message.

If there is a way to send a message using keyboard then please let me know.

Thanks,

Hey all, I'm hoping someone can help me. I have found no answers online to date.

I cannot print from the Firefox browser. When I click the print button, my printer spits out a blank page.

I can print from any other browser, Word, Excel, PDF files, anything except for Firefox. This may not be as much of an issue if Firefox wasn't my primary browser, so when I start doing work on it and find I need to print something at the end, it's a problem.

My printer software is up-to-date, I tried resetting the printing preference to default (assuming I did this correctly), and I even uninstalled and re-installed Firefox (which was a disaster). None of this helped.

Is there one of you who may be able to provide me with the help I need?

I appreciate your effort greatly.

Hello, Since the update on 24 June 2025, bookmarks are displayed in black text on a black background. Is this normal? If not, how can I resolve the issue? I had set it to dark mode, but even when I switched back to light mode, nothing changed. I would appreciate help from the community or Mozilla if anyone has a website address to contact them. Have a nice day.

I had an extension that gave me access to Claude.ai. It was working quite well until this morning, when its CPU shot through the roof. I shut down its tab. I could not figure out how to restart it, and it's not in my extensions list. Was that deprecated? Is there still a direct interface to Claude.ai on Firefox?

I pulled up About:Firefox, and it informs I must restart to update it. That was news to me.

I could also (before restart), do successive Control-T presses to resurrect my Claude.ai. I will try that before restart. Could you tell me what I should look for in the Claude.ai tab, or elsewhere, if Control-T is successful? Thanks,

The page https://support.mozilla.org/en-US/kb/ai-chatbot lacks the list of data shared with the chatbot AI providers. It would be nice to know how it is done, how to review the data, and how pages can provide better data.