Cloudflare worker sends email with no message body (neither plain nor HTML)

For Workes & Pages, what is the name of the domain?

workers.dev

What is the issue or error you’re encountering

Cloudflare Email worker - no message body

What steps have you taken to resolve the issue?

Issue has been described here, too: Cloudflare Email worker - no message body - Stack Overflow

Any update on this issue, please?