3249481 - Message Contents on Content Studio are Showing Blank Data on the "Changed By" Field

After opening Content Studio app and clicking on the "All Content" button, you notice that some contents are showing their "Changed On" date correctly but the "Changed By" field is empty where it should show the name of the person responsible for the last change.

SAP Marketing Cloud

1. Open Content Studio app.
2. Click on "All Content".
3. Notice that for some contents the "Changed On" date is shown correctly but the "Changed By" field is empty.

The user responsible for the last change on the message content has been already deleted from the system.

This is the system expected behaviour.

administrative data, business user, email content, sms, campaign content , KBA , CEC-MKT-MEM , Content Studio: E-Mails and other messages , Problem