Firefox for Android Community Forum

Hello, I've been having issues with the Firefox app on my Android ever since the most recent update on 4th of July. Whenever I tap the "tabs" button, the tabs viewer opens as always, but if I try to scroll and browse the tab, or if I try to close any of the visible tabs, the whole app crashes. Because of that, I can only switch between tabs by swiping, but it can be annoying if you're used to using many tabs like myself. I have cleared my cache multiple times and it didn't help. I am not too tech-savvy but is there any way to fix it? Thank you!

I'm having the same issue as previously posted below. I am on a Google pixel 7 pro.

"On youtube mobile site or a reddit video, when I click the bottom right button to fullscreen the video, a message pops up that says 'entering fullscreen mode' (with a firefox logo on the left of the message) and then firefox closes and I'm at my android home page

This seems to happen when I watch videos in a new instance. If I reopen firefox to the video and then try fullscreen again, it goes full screen no problem. So basically it's annoying and happens when I try to watch any video full screen for the first time.

Is this a known bug? Wasn't an issue on my old phone (I just got the galaxy s23). "

when i have more than 10 pages open the app starts crashing, won't let me go back as well and sometimes just reloads. There were also situations in which he grabbed me without me doing anything. I have about 4-5 extensions (in the photo). I'm using Samsung Galaxy S24, my previous was A52 (I had no problem with it)

Going to full screen on YouTube (and other video websites) usually breaks the Firefox app on pixel 7 pro. It keeps playing but just closes and can't be reopened. I have to stop the app, open it again, and try again. Does anyone know how to fix this?

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.

Hi support team,

I was using Mozilla Firefox on my Samsung Galaxy s20+ without any issues. I have transferred all data from my old one to new one, Samsung Galaxy S24 after this migration Mozilla Firefox crashes, when I was forwarded from an app.

Standard browser: Mozilla Firefox I have already reinstalled the Mozilla. This action works properly with other browsers.

Kind regards Mustafa

Out of nowhere, the browser stopped when I was browsing and the pages started showing slowness. 👇🏻👇🏻👇🏻

c11-9c7f-1ce62d5e295d java.lang.IllegalArgumentException: Cannot round NaN value.

* New Sentry Instance: https://sentry.io/organizations/mozilla/issues/?project=6375561&query=7a6abefc7b3e4a31a088370e3b936c48
* Socorro: https://crash-stats.mozilla.org/report/index/bp-242b35e4-0f2d-4ecd-baba-facad0240527

java.lang.IllegalArgumentException: Cannot round NaN value. at kotlin.math.MathKt__MathJVMKt.roundToInt(MathJVM.kt:4) at androidx.compose.foundation.layout.RowColumnMeasurementHelper.measureWithoutPlacing-_EkL_-Y(RowColumnMeasurementHelper.kt:284) at androidx.compose.foundation.layout.RowColumnMeasurePolicy.measure-3p2s80s(RowColumnImpl.kt:45) at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0(InnerNodeCoordinator.kt:39) at androidx.compose.foundation.layout.FillNode.measure-3p2s80s(Size.kt:101) at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0(LayoutModifierNodeCoordinator.kt:15) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke(LayoutNodeLayoutDelegate.kt:9) at androidx.compose.runtime.snapshots.Snapshot$Companion.observe(Snapshot.kt:60) at androidx.compose.runtime.snapshots.SnapshotStateObserver$ObservedScopeMap.observe(SnapshotStateObserver.kt:48) at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads(SnapshotStateObserver.kt:154) at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release(OwnerSnapshotObserver.kt:3) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.remeasure-BRTryo0(LayoutNodeLayoutDelegate.kt:108) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.measure-BRTryo0(LayoutNodeLayoutDelegate.kt:104) at androidx.compose.foundation.layout.RowColumnMeasurementHelper.measureWithoutPlacing-_EkL_-Y(RowColumnMeasurementHelper.kt:116) at androidx.compose.foundation.layout.RowColumnMeasurePolicy.measure-3p2s80s(RowColumnImpl.kt:45) at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0(InnerNodeCoordinator.kt:39) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke(LayoutNodeLayoutDelegate.kt:9) at androidx.compose.runtime.snapshots.Snapshot$Companion.observe(Snapshot.kt:60) at androidx.compose.runtime.snapshots.SnapshotStateObserver$ObservedScopeMap.observe(SnapshotStateObserver.kt:48) at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads(SnapshotStateObserver.kt:154) at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release(OwnerSnapshotObserver.kt:3) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.remeasure-BRTryo0(LayoutNodeLayoutDelegate.kt:108) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.measure-BRTryo0(LayoutNodeLayoutDelegate.kt:104) at androidx.compose.ui.layout.RootMeasurePolicy.measure-3p2s80s(RootMeasurePolicy.kt:39) at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0(InnerNodeCoordinator.kt:39) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke(LayoutNodeLayoutDelegate.kt:9) at androidx.compose.runtime.snapshots.Snapshot$Companion.observe(Snapshot.kt:60) at androidx.compose.runtime.snapshots.SnapshotStateObserver$ObservedScopeMap.observe(SnapshotStateObserver.kt:48) at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads(SnapshotStateObserver.kt:154) at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release(OwnerSnapshotObserver.kt:3) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.remeasure-BRTryo0(LayoutNodeLayoutDelegate.kt:108) at androidx.compose.ui.node.LayoutNode.remeasure-_Sx5XlM$ui_release(LayoutNode.kt:18) at androidx.compose.ui.node.MeasureAndLayoutDelegate.doRemeasure-sdFAvZA(MeasureAndLayoutDelegate.kt:3) at androidx.compose.ui.node.MeasureAndLayoutDelegate.remeasureOnly(MeasureAndLayoutDelegate.kt:18) at androidx.compose.ui.node.MeasureAndLayoutDelegate.measureOnly(MeasureAndLayoutDelegate.kt:59) at androidx.compose.ui.platform.AndroidComposeView.onMeasure(AndroidComposeView.android.kt:83) at android.view.View.measure(View.java:26415) at androidx.compose.ui.platform.AbstractComposeView.internalOnMeasure$ui_release(ComposeView.android.kt:64) at androidx.compose.ui.platform.AbstractComposeView.onMeasure(ComposeView.android.kt:4) at android.view.View.measure(View.java:26415) at androidx.recyclerview.widget.RecyclerView$LayoutManager.measureChildWithMargins(RecyclerView.java:89) at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:60) at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:49) at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:800) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:61) at androidx.recyclerview.widget.RecyclerView.onMeasure(RecyclerView.java:64) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at androidx.coordinatorlayout.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:7) at com.google.android.material.appbar.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:93) at androidx.coordinatorlayout.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:391) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at org.mozilla.fenix.perf.HomeActivityRootLinearLayout.onMeasure(HomeActivityRootLinearLayout.kt:11) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:160) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:26415) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7845) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at com.android.internal.policy.DecorView.onMeasure(DecorView.java:1003) at android.view.View.measure(View.java:26415) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:3605) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:2348) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2640) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2197) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8960) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:996) at android.view.Choreographer.doCallbacks(Choreographer.java:794) at android.view.Choreographer.doFrame(Choreographer.java:729) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:981) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:237) at android.app.ActivityThread.main(ActivityThread.java:7807) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1047)

Listening to audiobooks made me notice this problem, often whilst my phone is turned off and the audiobook is playing in the background on a tab on firefox the audio would just stop and i would find either that firefox was still open but unloaded all the tabs, or that it simply crashed. I thought this was a thing that solely happened when playing audio in the background but then i noticed that it is actually a general problem when firefox is kept open in the background. It doesnt happen after a set amount of time, sometimes it happens immediately, sometimes after like 10 minutes that it is kept in the background. How can i fix this? its very annoying.

Sometimes whenever i use twitter it will crash and stop working everytime i switch a other tab it glitches and stays on the tab i switched from, and it would also black out and make the tab unusable.

For the past few weeks builds, downloading image from any website is weirdly triggering a crash of com.android.phone due to which mobile network is lost as well. Using Samsung Galaxy Note9.

Firefox Update 124.2.0 (Build #2016012559), 7a0e399c7b+ GV: 124.0.2-20240401114208 AS: 124.0

Fire HD 10 (11 generation) Build 0029294005124 FireOS 7.3.2.9

Logged into Mozilla, Sync now does nothing, "Last synced: never" Also crashes frequently all since last update.

Firefox for Andoird crashes every time tab listing opened. If I do "about:crashes" i see the attached list of crashes ...

"java.lang.IllegalArgumentException..."

Version is 130.0 (Build 2016041319)

I tried clearing cache but it didn't help.

When I want to watch a video on fullscreen on my Samsung tablet, Firefox minimalizes throws me to my homescreen. After I go back to Firefox, the video is choppy and has a low fps. I fix it by forward and rewind the video by clicking on the side of the screen. Very annoying. Browser is up to date, please help

Hello,

I am getting a frequent freeze in the Android app and then shortly after a crash. Info: - happens on FF, FF Beta, and FF Nightly,and reinstall/phone reset didn't fix. - Samsung Galaxy SM-G965U running Android 10. - every error starts with java.lang.OutofMemoryError. - it never happens just on startup, just on auto fill, or some of the similar crash reports I've seen around here. - it does appear to be site-specific, but sometimes the site works and sometimes it does not: if I close the last tab after a crash, it will usually work for awhile. - Sync and disabling Add-ons doesnt fix it, although perhaps its worse with uBlock Origin enabled (not conclusively)

Thanks for any suggestions.

edited for clarity

1. Open the Firefox for Android application 2. Either browse around first, download something beforehand, or do it right at the start, go to the 'three dot' menu on the top right screen and select the 'Downloads' section. 3. The application will freeze without opening the section and after a while will say 'Firefox not responding' before crashing.

Dear Mozilla support,

For a while I have the problem that when I want to watch a video fullscreen on a website e.g. youtube, inline video etc. Firefox stops and completely closes. This is only the first time when I play the video. When I re-open the browser I can continue watching the video fullscreen without any problem. I don't receive any error messages.

Attached the specs of my phone and Firefox browser.

Kind regards, Rick

For months now, Firefox Mobile has constantly been getting "app has stopped responding" crashes and even hard crashes (multiple times per day) for Pixel users. There's already a bug report about it but the FF team's response is that they aren't going to do anything. They claim it's an issue with the kernel but no other apps / browsers on the Pixel have this problem.

This is beyond pathetic. Maybe this not-my-problem mentality is why Firefox has reduced to less than 1% penetration.

Hi! I need help with my firefox, because i started to have a problem yesterday. Everytime i try to go to sertain sites it crashes for no reason! Such as Georgia power, georgia natural gas, and etc....