Copy of sent mails in Trash (GSuite / IMAP)

I have just synced my Gmail Trash folder with eM Client (IMAP) and I noticed it’s filled with sent messages.

To be clear, the sent messages were sent, so the version in Trash seems to be a copy?

Has anyone else experienced this? Have I setup/configured something incorrectly?

Thanks

I think this might be due to the auto-save feature (which saves my new/reply messages every 1 min).

Anyone else can confirm this?

Sounds about right, but I’m not a regular GMail user. Jay’s comment seems to explain it though.