STABLE version -- 4.3.9.248

[cb-user]

Please check this:
https://www.centbrowser.net/en/showthread.php?tid=3155

It doesn't work in this version.

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Enable DNS-Over-HTTPS.

Chrome 66-77 command line: --enable-features="dns-over-https<DoHTrial" --force-fieldtrials="DoHTrial/Group1" --force-fieldtrial-params="DoHTrial.Group1:server/https%3A%2F%2Fcloudflare-dns%2Ecom%2Fdns-query/method/POST"

Chrome 78-86 command line: --enable-features="DnsOverHttps<DoHTrial" --force-fieldtrials="DoHTrial/Group1" --force-fieldtrial-params="DoHTrial.Group1:Fallback/true/Templates/https%3A%2F%2Fcloudflare-dns.com%2Fdns-query"

Chrome 87 stable: Settings > Privacy and security > Security > Use secure DNS > With > Cloudflare (1.1.1.1) or select Custom and enter any DNS provider hostname.

I'll try with the second key. The first one doesn't work.