AdGuard is deactivated every time Firefox is restarted

[Skywriter960]

AdGuard Extension version

Version 4.3.35

Browser version

Firefox 124.0.1

OS version

Win 11

What filters do you have enabled?

AdGuard Base filter

What Stealth Mode options do you have enabled?

No response

Issue Details

For whatever reason, AdGuard is deactivated 'by magic' the next time Firefox is started ...

Expected Behavior

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Screenshots

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Additional Information

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[alexx7311]

@Skywriter960 Hello! This problem is most likely related to a Firefox bug. The problem is very rare and we can't reproduce it, but if you can help us with it, it would be appreciated.

Please do the following:

1. Open the Browser console (press Ctrl + Shift + J (or Cmd + Shift + J on a Mac))
2. Choose Multiprocess mode and leave the Browser console opened

Multiprocess mode

3. Follow steps 1-3 from this instruction for Firefox to open background page in the extension
4. Type each of these commands in the console of the background page:

await browser.storage.local.get('adguard-settings');

await browser.storage.local.get('adguard-settings-2');

await browser.storage.local.set({'adguard-settings': 'test'});

await browser.storage.local.set({'adguard-settings-2': 'test'});

await browser.storage.local.remove('adguard-settings');

await browser.storage.local.remove('adguard-settings-2');

5. Right click on any entry in console of the background page and click "Save All Messages to File" (as per step 4 in the instruction above)
6. Go to the Events tab in Firefox at about:telemetry#events-tab
7. Type in "Find in Events" field "extensions.data" and take a screenshot, then "storageLocalError" and take a screenshot.

Find in Events

8. Navigate to the Browser console (from the step 1) and right click on any entry and click "Save All Messages to File".
9. Please attach all resulting files to the comment in this issue.

[alexx7311]

@Skywriter960 Hello! Further discussion will be in #2775
If you would like to help us solve the problem, please leave a comment in that issue.