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I have an mp4 (h264 AAC) video of 37MB which plays acceptably from my website in Safari, Chrome and Edge, but when played in Firefox (my default browser) the sound and picture synch is significantly seperated. When the video is compressed to 26MB it suffers some expected loss of sound quality but plays with near perfect lip synch. What is the issue with playback ?

The autostart of the page is attached. It is not possible to disable it. I have tried everything. I have uninstalled firefox and reinstalled it, but unfortunately the page still appears every time I start firefox. Before the update everything was fine, but after the last update it keeps showing me this instead of a blank page with favorites

As the title states, certain media elements within Firefox refuse to play with audio, but only with frustrating inconsistency. For example, any videos on Youtube are fine. Any videos on Reddit are fine. But many videos, most commonly on boorus and streaming sites I cannot name here, will not play. The volume on the video slider is all the way up, the Firefox application is not muted, the site is not muted, and the tab is not muted. The only thing that makes those videos play audio is if I left click on them to open them in another tab by themselves. While it solves the issue, it's still an extremely inconvenient way to go about my browsing. I know for a fact that this is a Firefox problem because those same videos on those same sites work perfectly fine within other browsers. Please, does anybody know of a solution to this issue?

Hallo zusammen,

ich habe 3 Bildschirme. Wenn ich auf Bildschirm A z.B. Youtube im Vollbirld laufen habe und auf Bildschirm B z.B was anderes im vollbild Laufen habe und ESC drücke wird das Vollbild auf beiden Bildschirmen geschlossen. Dies ist erst seit kurzem so und ist nicht beabsichtigt. Kennt jemand da eine Lösung? Das standardprozedere wie Cookies etc wurde schon genutzt und hat nix gebracht. Vielen Dank im Voraus.

I have a Tablet which I use for everything and I often need to browse and use websites. One day all websites were suddenly completely off in scaing. It's like I am browsing on my phone, but only looking at the top third of the website. I don't thing that I have changed any settings as it was just like that the next day.

it's exhausting and seriously disruptive

I have used Firefox for years with no problems. The past month, however, I am encountering many problems with my often used web sites. What is going on? I make a purchase and cannot proceed. I have not added any new blockers or anything.

My wsj.com suscription loads the main screen, then for an individual article briefly shows some of the content before dissapearing and reporting "Application error: a client-side exception has occurred (see the browser console for more information)."

Using latest Firefox in updated Windows 10.

No similar problems with other sites.

How can I save a link to my android launcher and have it open in firefox even when the target has a manifest.json for a PWA?

By now I've done a bunch or research about PWAs. Old man Moz. has a nifty article about building them too.

Apparently they've been all the rage since 2017 or so.

But it's driving me up the wall at the moment. I like all the browser goodness available when I look at a website. Multiple tabs. Easy fwd/back navigation between sites. The ability to fire up another tab right there. Bookmark a particular page. Send a link. Whatever it is, I want my browser functionality.

I want to be able to save a link to my android launcher and have it open in firefox even if the marketing dept at the website would rather I thought it was an app.

Surely there is something in about:config? I've searched for everything I could think of and come up empty.

When using Firefox on Android for a while, attempting to use pinch to zoom on a web site will cause Android to crash, as in the screen will go black, the G logo animation will appear, and I'll be sent back to the lock screen. It's not just the app that crashes. It doesn't seem to be a full reboot as that takes longer and starts with a different animation, but some part of Android is restarting.

It's consistent but not predictable. Pinch to zoom will work on one site fine and then crash on the same site later. It seems to be a resource issue as it's unlikely to happen on a fresh instance and it becomes more likely the longer you've been using Firefox.

This has been happening for several months, since at least July. It's happened both on my old Pixel 6 Pro and my new Pixel 9 Pro. It's happened on both Android 14 and 15.

I eventually found out I could go to Settings > About Firefox > Crashes and get some debugging info, but I don't know what to do with it. I currently have 15 crashes between now and Oct 16th which all say:

java.lang.RuntimeException: Adding window failed

Clicking Share to get more info on the latest one adds:

java.lang.RunetimeException: Adding window failed

at android.view.ViewRootImpl.setView(ViewRootImpl.java:1618)
at android.view.WindowManager.Global.addView(WindowManagerGlobal.java:442)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:158)
at android.app.Dialog.show(Dialog.java:352)
[...]

Caused by: android.os.DeadObjectException

at android.os.BinderProxy.transactNative(NativeMethod)
at android.os.BinderProxy.transact(BinderProxy.java:568)
at android.view.IWindowSession$Stub$Proxy.addToDisplayAsUser(IWindowSession.java:1305)
at android.view.ViewRootImpl.setView(ViewRootImpl.java:1596)
... 18 more

I don't know what to do with this info. Should I file a Bugzilla report with just this? The GUID associated with the most recent one is 7a5e5497-bb62-4e3c-94fc-5c63c51d0830. I can't look it up in crash-stats.mozilla.org. Or should I assume all crash reports are automatically received? I'd still like to be able to have a Bugzilla bug to watch for progress.

The first image speaks for itself. When I want to change the way this setting is set in a Facebook group, when Firefox is full screen, the associated dialog is so placed and/or sized on the screen that it is partially truncated on the left by the left side of the display. I just checked in MS Edge and it displays normally there with full screen display. It displays normally in Firefox when I Restore Down. So this one at least does seem to be specific to Firefox.

I have a second full screen display issue that may be related, but this one isn't just Firefox; Ms Edge also shows it, and other applications also behave similarly: the right hand scroll bar disappears in full screen (as does the applicaion menu control)! I had some trouble taking a pair of images to illustrate this, using Snipping Tool. The second image, when Firefox is set to restore Down, shows the scroll bar and application menu control, which is what I see. The third image was more tricky to take because the first time I tried, the screen capture included a scroll bar and application menu control even though they were not visible on screen. I had to redo it and be very careful not to let the right hand side of the selection drift off the right hand side of the display.

It seems like the full screen display is just a little "larger" than the physical display. I have tried one or two other screen resolution settings and that has not helped. My best guess is that it's a monitor settings problem, but I've also fiddled with the monitor settings, again with no success. And even if a monitor setting explains the pervasive right hand side issue, it doesn't explain the Facebook dialogue issue, which does appear to be Firefox-specific.

So my current workaround is just not to have anything full screen :(