Issue closed by A Issue closed by B

Every issue gets two closure emails

One says Issue closed by Nerfowitz

The other says

Issue closed by Barflovitz.

Seen in

• https://salsa.debian.org/debconf-team/public/websites/dc18/issues/40
• https://salsa.debian.org/debconf-team/public/websites/dc18/issues/32

Issue was closed by Nicolas Dandrimont

Issue was closed by Stefano Rivera

Looking closer,

Stefano Rivera @stefanor closed via commit 533ef67c about an hour ago 
Nicolas Dandrimont @olasd closed via merge request !54 (merged) about an hour ago

Two bugs, four emails.

Well please make up your mind, and only send one closed email per bug.