Firefox Community Forum

In recent Firefox versions, the behavior of window.open() has changed. When opening a new window with an empty URL (), Firefox opens a blank tab (about:blank) and then loads the specified content. However, the about:blank tab may not close automatically as it did in earlier versions.

Completely bizarre behavior that I cannot explain or find any google matches for. When I enter a search term in Mail, I don't even have to hit enter, it shows up in Firefox's search field as soon as I make Firefox the active application (iMac desktop). It happens if I have the Firefox search bar open, or if I open it (Cmd-F) afterwards. It happens in Private Browsing. E.g. if I clear the Firefox field, go to Mail, type some letters into the search field, as soon as Firefox becomes the active window, the search term is populated.

I will entertain any explanation or suggestion, whether based in reality or not. FWIW I'm running Malwarebytes unpaid version so I have some sorta protection. For FF extensions I have Ublock origin, FB Purity, and FB container. I tried turning them off; no change. I didn't try restarting FF after turning them off though, too many tabs needed right now.

thanks, jim

My COPY context menu item is greyed out randomly. I guess it's not an issue of websites preventing copying. Happens while visiting various websites.

There's an advice to refresh Firefox, but I want to keep my passwords and avoid setting bookmarks again or resetting UI items displacement, any advice? Bugzilla threads contain some fixes, but as I have up-to-date version of Firefox, the bug is still randomly present.

Attachment: shows Copy field not being greyed-out

https://bugzilla.mozilla.org/show_bug.cgi?id=1863246#c14 https://bugzilla.mozilla.org/show_bug.cgi?id=1863246 https://forum.manjaro.org/t/firefox-doesnt-allow-to-copy-from-right-click-menu-randomly/150716/35

Despite having the tick in the "Open Tabs and Windows" box, the last 3 days they have not been opened. Instead I get a completely blank page, not even the Firefox home page.

Even the "pinned" tabs aren't opening.

In 20 years I've never had this happen before.

Update 136.0.3 AND 136.0.4 - Updated, but each time the browser is closed (even after a system shut-down), it sticks with 'Being updated in another instance'. There is no other instance. Single user, Windows11-Pro, local user (not connected to one-drive or MS account). Just started this morning (27-Mar-25).

It eventually shows that it has updated, but still comes back the next time with message.

Successfully changed from 003 to 0.4, but the new 0.4 does the same thing.

Would really like to know what's going on, and fix it.

之前用的老版本firefox浏览器，注册和登录的是firefox账户，并且绑定了邮箱。自从账户升级为mozilla账户后，要求重新注册新账户，新账户我用的也是相同邮箱，但是系统并未提示我账户信息迁移或者邮箱已经被注册使用。mozilla账户是全新的账户，没有任何之前firefox账户的信息，firefox账户上使用记录和保存书签也完全没有。 现在我要如何将之前firefox账户里面的信息转移到mozilla账户里面，或者浏览器firefox账户的登录端口在哪里，不想用Mozilla账户。

In the latest version 137, I've detected an error when uploading/attaching any file to a website. The error occurs when browsing files on the computer. When you click on a folder that's a shortcut, Firefox attaches it as a .lnk. Double clicking on the folder doesn't work To fix this, I have to right-click and open it. That way, I can navigate to the files in the folder.

I save an article on pocker, I click next to the pocket box it goes away, but when I go to print the article it shows the pocket box, that is a change in the software, how do I fix this?

Hello,

When I attempt to open Firefox, I am getting a pop-up screen saying:

135.0.1 not compatible with min version >= 135.0 max version <=135.0

Also, I am being advised to reinstall Firefox. Do I need to uninstall Firefox first?

Windows10, Dell Laptop

Thank you,

Petrik