Hi

Did you have many tabs open when this happened?

Thank you for your interest.

No, I did not have many tabs open. In fact it is often the first tab I open after starting Firefox on my tablet when I experience the problem. But its even more frustrating when I have a half dozen tabs open thanks to searches, and of course lose all when Firefox crashes. So some randomness to the problem. But its not new for me. This has been happening for months, including the previous version of Firefox.

I do not experience the problem on my Samsung Galaxy Note 9 phone which has the same version of Firefox 102. However, the version of Android on the phone is 10.

I just now remembered that there is a way to see Firefox crash reports. I just checked using about:crashes and I see many many crash reports, all with the same message:

ed83f640-0fa8-49de-a0b5-7484a67229b2 "java.lang.IndexOutOfBoundsException: Index: 3, Size: 0

Here is more from the most recent crash of a few hours ago:

Firefox Android V102 and earlier crashing when selecting "switch" after selecting "Open link in private tab"

ed83f640-0fa8-49de-a0b5-7484a67229b2 java.lang.IndexOutOfBoundsException: Index: 3, Size: 0

java.lang.IndexOutOfBoundsException: Index: 3, Size: 0 at java.util.ArrayList.get(ArrayList.java:437) at android.view.ViewGroup.getAndVerifyPreorderedView(ViewGroup.java:4574) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2165) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at android.view.ViewGroup.dispatchTransformedGenericPointerEvent(ViewGroup.java:2629) at android.view.ViewGroup.dispatchHoverEvent(ViewGroup.java:2226) at com.android.internal.policy.DecorView.dispatchHoverEvent(DecorView.java:4535) at android.view.View.dispatchGenericMotionEvent(View.java:15186) at com.android.internal.policy.DecorView.superDispatchGenericMotionEvent(DecorView.java:1023) at com.android.internal.policy.PhoneWindow.superDispatchGenericMotionEvent(PhoneWindow.java:1972) at android.app.Activity.dispatchGenericMotionEvent(Activity.java:4301) at androidx.appcompat.view.WindowCallbackWrapper.dispatchGenericMotionEvent(WindowCallbackWrapper.java:1) at com.android.internal.policy.DecorView.dispatchGenericMotionEvent(DecorView.java:987) at android.view.View.dispatchPointerEvent(View.java:15337) at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:7794) at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:7567) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6901) at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:6958) at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:6924) at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:7122) at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:6932) at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:7179) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6905) at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:6958) at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:6924) at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:6932) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6905) at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:10354) at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:10202) at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:10158) at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:10486) at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:259) at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method) at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:239) at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:10434) at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:10575) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1108) at android.view.Choreographer.doCallbacks(Choreographer.java:866) at android.view.Choreographer.doFrame(Choreographer.java:789) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1092) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loopOnce(Looper.java:226) at android.os.Looper.loop(Looper.java:313) at android.app.ActivityThread.main(ActivityThread.java:8663) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:567) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)

Please can you select the "Socorro" link on the most recent crash and copy the address of the page that opens into a reply to this thread.