Firefox - removing a cookie causes an error

[zloyden]

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• Filters were updated before reproducing an issue
• I checked the knowledge base and found no answer
• I checked to make sure that this issue has not already been filed

AdGuard Extension version

4.3.46

Browser version

Firefox 126

OS version

Windows 11

Ad Blocking

No response

Privacy

No response

Social

No response

Annoyances

No response

Security

No response

Other

No response

Language-specific

No response

What Stealth Mode options do you have enabled?

No response

Issue Details

Steps to reproduce:

1. Add a rule to the user rules

||pixiv.net^$cookie=first_visit_datetime_pc

2. Open pixiv.net in FF
3. Login - account is required
4. Logout
5. There is an error like in the report.

Expected Behavior

No error as in Chrome.

Actual Behavior

There is an error that prevents to see the login page.

Screenshots

Screenshot 1

Additional Information

AdguardTeam/AdguardFilters#180178