Email attachments no longer working

What are the steps to replicate the problem? What happens with Webform submissions with attachments when emails aren't scheduled?

Step 1. WebForm data is submitted from any WebForm.
Step 2. WebForm Scheduled Task module ( https://www.drupal.org/project/webform_scheduled_tasks → ) is configured to gather the form data in CSV format and email the data to a list of recipients once daily.
Step 3. Cron event is scheduled and run once daily.
Step 4. Cron event triggers WebForm Scheduled Task module to run and:
a: writes the CSV file to the Private directory.
b: send an email message to the list of recipients with the CSV file attached.
c: (option) deletes the form data.
Error: Step 4, b. Email is sent, but the CSV file is not attached.

SMTP Authentication Support module ( https://www.drupal.org/project/smtp → ) successfully performs Step 4, b.

Thanks, I can replicate the problem.

I've reverted the previous change. Let's fix this in the original issue.