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). "

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?

while performing a download, "com.android.phone has stopped" apears, the signal strenght indicator in the upper right restarts(disappears, reappears with the 4G mark, the mark disappears and the indicator works after), after that the phone service and the phone app work normally. the download finishes normally.

using motorola e7 plus, android 10

tried restarting the phone, deleting cash and data of phone app, deleting cash of firefox

tried downloading using google chrome, all work normally.

it is possible that the issue started happening after I updated firefox but It's possible that it was happening before too.

I've been using Firefox on my phone for about half a year, rarely updating the browser. I did it first time approximately 2 weeks ago and since then it started to crash frequently. The latest update hasn't resolved the issue.

Setup: - galaxy S23+ - latest Android version (13) - Firefox version 121.0.1 (Build #2015995071), fd4d251332+ GV: 121.0.1-20231230165955 AS: 121.0

I have more than 100+ tabs opened with a setting activated "Close tab: Never" and "Move old tabs to inactive". Has several plugins installed: - Ghostery - Decentraleyes - Search by Image - uBlock Origin - ClearURLs

I usually visit 5-10 websites a day, having multiple opened tabs to read later. Sometimes when I open a new tab, open the page, start scrolling, the browser slows down and then crashes. It doesn't show any error, just shuts down the app so I have to open it again.

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.

Firefox Android just crashed when opening a bunch of bookmarks and then again every time I wanted to report a crash. I hope someone here can forward this to whoever usually receives the crash reports.

1cb54f1f-11f5-4fa7-9d97-b4bf58d29ac2 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference at java.lang.String.valueOf(String.java:2924) at java.lang.StringBuilder.append(StringBuilder.java:132) at java.lang.Throwable.printEnclosedStackTrace(Throwable.java:709) at java.lang.Throwable.printStackTrace(Throwable.java:674) at java.lang.Throwable.printStackTrace(Throwable.java:735) at mozilla.components.support.base.ext.ThrowableKt.getStacktraceAsString$default(Throwable.kt:19) at mozilla.components.lib.crash.service.MozillaSocorroService.sendCrashData(MozillaSocorroService.kt:607) at mozilla.components.lib.crash.service.MozillaSocorroService.sendReport$lib_crash_release(MozillaSocorroService.kt:285) at mozilla.components.lib.crash.service.MozillaSocorroService.report(MozillaSocorroService.kt:5) at mozilla.components.lib.crash.CrashReporter$submitReport$2.invokeSuspend(CrashReporter.kt:70) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:9) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:112) at kotlinx.coroutines.internal.LimitedDispatcher$Worker.run(LimitedDispatcher.kt:4) at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:3) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:96) Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@6aec4f8, Dispatchers.IO]

The original bookmarks crash was this:

300e77b6-00e5-458d-ae84-d1202c866a1b java.lang.NullPointerException

* New Sentry Instance: https://sentry.io/organizations/mozilla/issues/?project=6375561&query=9fd75a9f565c460b91e4977064d87e83

java.lang.NullPointerException at org.mozilla.fenix.library.bookmarks.BookmarkFragment.refreshBookmarks(BookmarkFragment.kt:103) at org.mozilla.fenix.library.bookmarks.BookmarkFragment$refreshBookmarks$1.invokeSuspend(BookmarkFragment.kt:14) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:9) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:112) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7400) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:935) Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@26f4bf6, Dispatchers.Main]

firefox is crashing when i try to download some file. I gotta clear the app's data for it to work normally again, but this always happens when I try to download it again, also, the browser doesn't open after it crashes, only after I clear its data.

Firefox for Android version 119.0.1 Android 11 (64 bits)

I raised this issue in my review on the Google App Store and was asked to submit it as a question here. On my phone (Oppo running on ColorOS 13.1), Firefox will stop working a number of times a month. For about 24 hours, aside from Google result pages, nothing will load, and I'll be stuck looking at an empty loading screen. The last time I raised this issue I was told to delete and reinstall the app, which worked in the moment but did nothing to stop the problem occurring again. Aside from waiting for the app to fix itself, nothing I've found works.

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....

When I try to open firefox on my android phone, it just closes and gives me an error message which I have attached a screen shot of.

I do not know if this is related but this happened after I scanned a qr code and tried to open it.

I have un-installed and reinstalled the app and turned my phone off then on again after reinstalling but this did not help.

Pls can you help?

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)

I left a critical review on the Play Store recently at the time of writing this regarding how, for years, the Firefox Android App would crash whenever I try to check the 'Downloads' page. This happened on at least 3 different devices over the years, and still does to this day. Because of this issue, Firefox no longer notifies me the time takes for a download completion in my notifications; only that it's completed once it does.

Not exactly sure what update started this but it worked fine before. I use Firefox on s23 ultra and tab S8 ultra. Both are signed into and I've tried to reinstall the app but still doesn't fix the problem. If I go on YouTube or a website that has video, if I click on full screen the app closes down but keeps playing the video. If I open the app and hit full screen again it then works and fills the screen with the video. If I could go back to a month ago maybe since this is pretty new bug. I do have add-ons but even with a clean install and no add-ons it still does the same thing. Was referred here from the play store.

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).

Firefox is fully updated from playstore. Only addons installed is ublock origin and Privacy Badger

Thank you for any assistance

My pixel 5 still has the bug that Mozilla claims they fixed where if you rotate the screen of a video to landscape then it will send the app to the background or will not fully rotate and more the half the screen will be cut off. Will this ever be addressed? It's been months now.

The only 'fix' seems clicking on the app and sending it to the background over and over.

Frequently crashes without warning, pages lag constantly where scrolling down is impossible, even after the page is refreshed. Creates way too many new tabs (like 50 a day) and ads mess up the design of the webpage.

I am posting this issue at the request of E from Firefox's app developer feedback after I submitted an app review.

The app continues to be unstable on my Pixel 6a (latest OS, Android 13) after freezing up on what appears to be any heavily scrolled pages or those that create a heavy cache. This freezing then causes abrupt phone restarts shortly thereafter, but not always immediately. Usually the culprit seems to be linked to Facebook album viewing, Imgur albums with article-length descriptions, etc. The abrupt phone restarting occurs whether force stopping Firefox and clearing the cache right away or not (although the restarts seem to happen faster if I force stop the app). I have simply closed the app during the freeze, put my phone down, and come back minutes or hours later to it having restarted on its own.

In addition, open tabs have a tendency to lose their scroll spots on a non-infinitely-scrolling page (e.g. an article not requiring expanding) when the app is minimized but not closed. This is probably unrelated(?) and isn't as critical as the spontaneous restarts, however.

It looks like many Pixel 6a users have had this issue, although those support threads from 8-9 months ago have now been archived. Someone else mentioned scripts from the websites themselves may be to blame? Would be curious to hear of any specific fixes. Thanks!

Dear Concern, Suddenly I Found Crashing Problem In Fire Fox New Updated Version. When I Try to Save Any Image Or Download Any File From it’s show A Crashing Problem. I attached A Photo Of This Crashing Problem. Sir Please Fix The Problem As Soon As Possible. Thank You.