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This started happening a few days ago.

I tried to drag a tab out of the main window to put it in its own window on my other monitor, but the tab just became unselectable, and if i scrolled in the tab bar, the tab icon and text would remain locked in place in the display while the other tabs moved behind it.

The main Firefox window also lost the minimize, restore, and close buttons. The only way to make the tabs work was to close Firefox and relaunch it.

I noticed this happened only after any app in the OS went full screen, be it a steam game, or another Firefox window, or a VLC window, or anything else that I did that made an app full screen in any of my monitors.

I am using Ubuntu 24.04 with KDE Plasma 5.27.12. Kernel is 6.14.0-29. Display server is Wayland.

Initially I thought this could be a problem with the snap version of Firefox, so now I've installed the deb package, but the problem remains. Firefox is the only app which presents a problem of any kind when any window goes full screen.

Here's a video showing what the problem looks like, in case my description was not clear. The ghostly tab in this video is the chess.com home page and you can see it as the third tab from the top right of the video, and it remains in that position as i scroll the other tabs, completely unselectable with the mouse.

https://www.youtube.com/watch?v=-mAfPS3_qkg

Any idea of what could be causing this issue to appear?

Thank you!

Hi. I've been having trouble with Firefox.

When I enter a certain website (https://app.helpwise.io/) using my PC, after a few minutes my internet connection gets disabled. When I try to run 'Diagnose Network Problems' in Win11, no issues.

First time this happened, a restart fixed the problem. Second time, a DNS flush fixed it. But after that, those solutions don't work anymore.

I initially thought it was that website (which I use for work) but I tried running that website on my Android phone using Firefox as well and I did not have any connectivity issues.

So, I tried running the website in Chrome - no issues. I did work side by side with Firefox opened as all my bookmarks for work are there, and eventually after a few hours my internet was disconnected again - even though https://app.helpwise.io/ was not opened in Firefox.

I have tried refreshing Firefox, then disabling all extensions and running https://app.helpwise.io/ and still it immediately disabled my internet.

There are some times that it even turned OFF my Avast anti-virus.

I have tried running Avast and Malwarebytes and no virus or malware was detected.

I still want to use Firefox and I'm now thinking of formatting my computer. But when I run Firefox again after formatting, I may have the same issue.

Can anyone help?

Hi

Up to a few days ago I was able to see "View all memories" from One Drive in Firefox. Not anymore.

I am subscribed to One Drive. Every few days I get an email from One Drive with the past memories from the day of the email. I will open the emails and click on "View all memories" then it would take me to the One Drive and I would be able to see those pictures individually. For a few days now I have not been able to do this on Firefox anymore. The website goes to gray like it is trying to download the pictures but it gets stuck there.

This is happening both on my desktop with Windows 7 and my laptop with Window 11. Everything works in the Microsoft Edge browser. I can see all the images individually from that day.

I have communicated this problem to Microsoft One Drive and it seems to be a browser problem. Is there any way that this problem can be solved in the Firefox browser?

I would appreciate your help, Amy

I am really really distraught right now. It took me two weeks to get the time and focus to write a long reply to a company's nice email to me. Stayed up till 2am to write it. Deliberately wanted to re-read it in the morning before sending. Gone. Nowhere to be found. I pressed "Save to draft" before closing my laptop. But not saved. This account actually has a "draft" folder, unlike most of my other accounts in Thunderbird, which I also cannot figure out and no one has helped me with.

I am trying to add my gmail account to Thunderbird, with the normal procedure. It immediately gives the correct settings with OAuth, send me to Google to get the permission when confirming these, then displays «Unable to connect to the server. The configuration, username or password are probably incorrect.», although I have double checked all of these. The same thing happens to a friend I am trying to help (with the latest Thunderbird version available) (140.2.0esr on Ubuntu 24.4.3 in my case). I wonder what happens, as I used to install Thunderbird and add accounts easily, from Google or other services, on a number of people's computer, a few months ago.

I have tried to add my googlemail email account to thunderbird several times but the page that appears says it is malformed and error 400 pops up, i've cleared cookies and checked url, i am not sure how to add a third party to my google account i'm not sure what to do anymore, kind regrds, chris

I created 3 new email accounts with my ISP. They work as webmail, but I want to bring them into Thunderbird on my desktop. When I try to do NEW ACCOUNT, I get the message there is an authentication error and check my email and password "exchange auth error" it says. But I know the accounts work on the web. I want to bring the messages into my computer.

• Question 1: Is there a maximum number of email accounts you can have in Thunderbird? I presently have 6 but I am going to be closing 3 of them and replacing them with the new accounts after I do the address changes.
• Question 2: Could it be that I am using the same account name in both systems? I had medresearch@dejazzd.com which I will be closing. I am trying to create medresearch@gomadison.com (the new address). Is that causing a problem?
• Question 3: There used to a place in Thunderbird NEW ACCOUNT to do a manual or custom installation. If I can get to that link, my ISP will help me.
• Question4: Is there a phone number I can call in Mozilla or pay for support to be able to call? Thank you.

Paula Mann <redacted>@madisontelco.com

I have been unable to forward any messages or send any email messages. It is happening in both my lap top and desktop computers. The lap top worked fine until a couple or days ago and now is is just like the desk top--unable to send messages to anyone. The window opens to send but there is no send arrow or ability to send anything!!

I have done nothing to chance my settings but now I need to double click to read new messages, Before I only had to click them once, now it opens a second tab with the new message. Whats going on?

Thunderbird just updated itself to a state where I need to do the setup process manually, which always takes a few hours (with networksolutions as the host). How can I continue to work with the previous version until the bug is fixed or I have time to go through the entire complicated process? Thanks in advance, Knut

I can no longer enter a password on the login page at https://secure.bankofamerica.com/login/sign-in/signOnV2Screen.go. I was able to change my password but it didn't help. A BofA agent could not identify the problem and walked me through the login using Chromium.

I use vertical tabs and the new tab group feature which allows you to assign a group heading for 1 or more tabs. When I right click on a tab I can create a new tab group. Below this option is a button labeled "Closed Groups". If I want to use one of these and check it, the tab I want to assign to it is closed and the group name is not listed in the sidebar. It seems the "Closed Groups" can no longer be used. There is no way to get rid of them and I end up creating duplicates as new tab groups with the same names. I want to either delete the Closed Groups or be able to reuse them. Any solution for this problem?

For past few weeks, Whenever I try to update FFX on windows 11, it fails. It takes me to another screen and tells me to download Firefox. When I try to download it , it aborts with this message.

"download.mozilla.org has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site."

To download Firefox with new version I have to use another browser but no choice. Then with new version of Firefox, I have faced the same issue of update and used same approach to update firefox to a newer version.

This error appears for some google sites as well but the same occurring for firefox download site itself is not understood.

Ajay