AdGuard test page not working in Linux mint 21.3

[githubuser013]

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AdGuard Extension version

4.3.53

Browser version

Firefox 127.0.1

OS version

Linux mint 21.3

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. Install adguard ad blocker and install adguard extra for firefox
2. go to https://adguard.com/en/test.html
3. The adguard ad blocker and adguard extra show as not installed

Expected Behavior

The adguard test page should show that the adguard is installed.

Actual Behavior

Adguard not installed.

Screenshots

Additional Information

No response