[Bug] navigator.storage.persist not saving data

[Nimdim]

Steps to reproduce

Enable persist mode via running the script:
navigator.storage.persist().then(function(val){console.log(val)});
I have tried also to bookmark page. But it didn't helped.

Testcase: https://testing123.offlinepad.com/test_persist.html

Expected behavior

Persist mode enabled.

Actual behavior

Persist mode not enabled.

Device information

• Android device: Android 9
• Fenix version: 80.1.2

┆Issue is synchronized with this Jira Task

[kbrosnan]

Do you have a sample page that uses this or know of a public testcase? Not seeing any examples in a quick look of MDN.

[Nimdim]

Do you have a sample page that uses this or know of a public testcase? Not seeing any examples in a quick look of MDN.

Here is a test link:
https://testing123.offlinepad.com/test_persist.html
First it detects if persist mode is already on. And after that tries to enable it

[kbrosnan]

Moved to bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1664002

[kbrosnan]

Android components issue. mozilla-mobile/android-components#3153