[FxA][Intermittent] The History library is not populated with feeds after sync

[Softvision-RemusDranca]

[FxA][Intermittent] The history library is not populated with feeds after sync

[Affected Versions]:

• Firefox Reality version 10-140842123 staging-master-signed.apk (28cd676).

[Affected Platforms]:

• HTC Vive Focus Plus - Android 7.1.2
• HTC Vive Plus - Android 7.1.2
• Pico Neo 2 - Android - 8.1.0
• Oculus Quest - Android 7.1.1
• Oculus Go - Android 7.1.2

[Prerequisites]:

• The headset is turned on and the app is opened.
• Have a valid FxA account.

[Steps to reproduce]:

1. Log into the FxA account from prerequisites.
2. Wait until the sync process is completed.
3. Click the History button from the tray.
4. Observed if the synced history feeds are displayed.

[Expected results]:

• The synced history feeds are displayed.

[Actual results]:

• The synced history feeds are not displayed.

[Additional Notes]:

• I was able to reproduce this issue in eight attempts out of ten.
• Attached is a screen recording of the issue: link.

[keianhzo]

@Softvision-RemusDranca I can't reproduce this, I've tried in several devices and can't see the behavior happening. Maybe there is some pre-existing state that we are missing? Is it a clean install? were there previous records in the history?

[Softvision-RemusDranca]

@keianhzo Could this be related to #3042? I think that they both had the same root cause where the library is not updated after sync/delete, but I can't really be sure of this. I do remember that I reproduced and logged them in the same day using the same build.

However, I was not able to reproduce this issue with the latest Firefox Reality version 10-141111916 (d9a7eec). Now, the History library is populated with feeds after sync.
Tested on HTC Vive Focus (Android 7.1.2), Oculus Quest (Android 7.1.1) and Pico Neo 2 (Android - 8.1.0) devices.

[keianhzo]

@Softvision-RemusDranca As it can't really be reproduced anymore I don't see the need of keeping this as a Major. We can lower the priority to keep it under the radar but not block the release.

[Softvision-RemusDranca]

@keianhzo I think it's safe to lower the priority. I will add the QA's "Normal" label and keep an eye on it in the future. Thanks!

[bluemarvin]

@Softvision-RemusDranca and @keianhzo Has this issue been reproduced recently? Do we keep it open for another release?

[Softvision-RemusDranca]

I'd say leave it open for now, at least until we go over #2267.

[Softvision-GeluHaiduc]

I encountered this behavior on Firefox Reality version 11 RC2 (5fd1bfd), although in a different form.
With one account not all the history feeds were synced, for example, for the month of May I had only 2 feeds synced when in reality there are a lot more for that month if you look in the history feeds on desktop.
With another account the feeds older than April aren't showing up in FxR.

[bluemarvin]

@keianhzo Possible regression cause by newer a-c?