Dovecot silently discards duplicates?

I setup an alias@example.com in postfix to point at me@example.com

I send one email to me@example.com and alias@example.com, tried both ways of using CC and putting both addresses in the To field.

I see in postfix logs that it delivers two messages to dovecot-lmtp.

However i only get one copy of the email in my inbox.

I assume dovecot is detecting duplicate emails going to the same location and just discarding one of them.

Is there a setting to control this behavior? Can dovecot be told to deliver what it was given and not decide to discard?