Can't enable filtering for domains with www prefix added to Allowlist manually

[zzebrum]

STR

1. add to Allowlist a domain rbc.ru
2. open the website rbc.ru in Safari
3. try to enable filtering from AdGuard menu in browser Actual result: website is reloaded, checkbox is not marked, domain still present in Allowlist

Expected result: website is reloaded, checkbox is marked and domain is removed from Allowlist.

The problem is reproducible only with domain names that contain 'www' prefix in the address bar.