Why doesn't Redmine attach a file from email to a created task?

Question

Redmine

Set up in redmine the creation of tasks from e-mail, using a script

rake -f Rakefile redmine:email:receive_imap RAILS_ENV="production" project=post port=143 host=192.168.0.200 [email protected] password=Password move_on_success=ok folder=inbox move_on_failure=failed --trace

The task is created and transferred to the "failed" folder
In the redmine settings, the maximum file size is set to 10240 kb, the allowed formats are specified

Tell me why the attached file is not attached to the letter to the task.
If you open a task, then through editing, you can attach a file, no problem.