Query on cPanel Email Disk Usage Calculation

Hi, The cpanel is showing incorrect disk usage for emails(Probably the extra usage refers to something else but I couldn't figure out what it is). Please take a look at the attached image. It shows two disk usages for emails for an account: 81GB is the actual usage. However, it is showing the total usage as 139GB. However, the backend calculation is just 81: [~]# du -sch /home/username/ 81G /home/username/ Can someone please help me understand this?