Firefox crash notification is not displayed on devices with Android 11/Android 12

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Steps to reproduce

1. Open several tabs.
2. Insert about:crashparent in the URL field.

Expected behavior

The app is closed, and the crash dialog notification is displayed in the notification bar.

Actual behavior

The app is closed, but the crash dialog notification is not displayed in the notification bar.

Device information

• Android device: Google Pixel 6 (Android 12), Oppo Find X3 Lite (Android 11)
• Not reproducible on Google Pixel (Android 10)
• Focus version: Focus Beta 97.0.0-beta.1, Fenix Nightly 97

screen-20220113-153409.mp4

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Reproducible in Beta 97.0.0-beta.2 with Google Pixel (Android 12).

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Reproducible on Beta 97.0.0-beta.4 with Motorola Moto G30 (Android 11). The crash notification is only displayed in the notification bar for a short period of time, until the crash report is sent to Mozilla.

screen-20220125-132749_Trim.mp4

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Reproducible on RC 96.3.0 with Google Pixel 6 (Android 12).

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This is still reproducible on Firefox Focus Nightly 98.0 (Build 360310515 🦎 98.0a1-20220130093554) with Google Pixel 6 (Android 12) and Motorola Moto G30 (Android 11).

Google Pixel 6 (Android 12): The crash dialog notification is not displayed in the notification bar at all.

Google.Pixel.6.mp4

Motorola Moto G30 (Android 11): The crash notification is only displayed in the notification bar for a short period of time, until the crash report is sent to Mozilla.

Motorola.Moto.G30.mp4

[Mugurell]

The issues seen on Android 12 might be because of mozilla-mobile/android-components#11666
The PendingIntent mutability rules should not affect Android 11 though so maybe there's another bug there in which case the logs for around that period will be helpful.

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Tested on Focus Nightly 98.0 from 02/04 with Motorola Moto G30 (Android 11) to provide the log.

I could no longer reproduce this, as the crash notification remained displayed permanently in the notification bar.
MotoG30.txt

crash.notification_MotoG3.mp4

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Verified as fixed on Firefox Focus Nightly 98.0 (Build 360390514 🦎 98.0a1-20220207065816) with Google Pixel 6 (Android 12) and Motorola Moto G30 (Android 11).
The Firefox crash notification remains displayed in the device's notification bar and can be accessed.