1543411 - Closing the app from task manager does not kill it

Status: RESOLVED WORKSFORME

(Firefox for Android Graveyard :: General, defect)

Description

[Sorina Florean [:sflorean]]

Environment:
Device: Google Pixel(Android Q);
Build: Nightly 68.0a1 (2019-04-09);

Steps to reproduce:

1. Open one tab in normal browsing.
2. Open one tab in private browsing.
3. Close Nightly.

Expected result:
The private session is not restored.

Actual result:
The private session is restored.

Notes:

• Not reproducible on Android 8 and 9.

Video: https://drive.google.com/open?id=1ptJMp_CVJItLZGTbVBPoNuNB-ONZrdUw

Comment 1

[Kevin Brosnan [Ex-Mozilla]]

I cannot reproduce this behavior using a Pixel 2XL and Android Q.

Comment 2

[Jan Henning [:JanH]]

Video: https://drive.google.com/open?id=1ptJMp_CVJItLZGTbVBPoNuNB-ONZrdUw

Not publicly visible.

That aside, this might seem like a possible bug in Android Q in that the savedInstanceState isn't cleared when we'd expect it to (swiping the app away in the task switcher).
Is this using the current (second I think) Android Q preview build? If yes, it might be worth filing an issue with Google, though I'd expect they'd want a small demonstration app which could reproduce the issue, which I personally won't be able to provide.

Comment 3

[Sorina Florean [:sflorean]]

(In reply to Jan Henning [:JanH] from comment #2)

Video: https://drive.google.com/open?id=1ptJMp_CVJItLZGTbVBPoNuNB-ONZrdUw

Not publicly visible.

It should be now.

That aside, this might seem like a possible bug in Android Q in that the savedInstanceState isn't cleared when we'd expect it to (swiping the app away in the task switcher).
Is this using the current (second I think) Android Q preview build? If yes, it might be worth filing an issue with Google, though I'd expect they'd want a small demonstration app which could reproduce the issue, which I personally won't be able to provide.

I observed the same behavior with videos, closing, and opening again the browser didn't affect the progress.
Video: https://drive.google.com/open?id=1uAT6Gbklp_aJLMy67E-9QPqTy8kYSb1C

I will update the bug to reflect the new findings.

Comment 4

[Jan Henning [:JanH]]

I observed the same behavior with videos, closing, and opening again the browser didn't affect the progress.

Same thing happens in the first video - the Google Maps tab appears too fast to be a cold start.

Comment 5

[Petru-Mugurel Lingurar [:petru]]

I think it's possible that removing the app from the task switcher does not actually kill it and so the problem would be with the Android build and not with our app.
To test for this you could try to "Force Stop" the app from System Settings and check if the issue still reproduces.

Comment 6

[Sorina Florean [:sflorean]]

Tested with the latest Nightly Build and couldn't reproduce again following the same steps as in description. I will close this bug as worksforme.