Attachments added via email size displays as 0.0KB

Summary

Attachments added via email size displays as 0.0KB, when selecting the list view option to display attachments on a ticket.

Steps to Reproduce

1. Create a ticket within Jira Service Management
2. As a reporter, request participant or agent reply to a notification with an attachment, such as a JPG image file ensuring it is added as a comment
3. Using the ⋯ buttons in attachments, select Switch to list view

Clicking on the attachment itself will open it up and the correct size is displayed in the upper left corner:

IMG_5283.jpg
image · 310 KB 

Expected Results

The size column accurately displays the file size of the attachment.

Actual Results

Attachments that were added via email are showing 0 B for the file size.

Notes

• Downloading the file would return the file with the actual size.
• A 0.0Kb sized file indicates a file is empty/corrupted refraining users from downloading the file.

Workaround

Add attachment via Issue view/portal