Left work is not updated currectly and unable to close the activity - by: saran

Hi

Left work is not update automatic for the activity that was tried to assign hours later by already real work is entered.
Only Manually edit of left work is performed.

When we try to close the done Activity before with left work hours then it is not able to close. Whether it is by future or bug. I am using version 6.4.2

Kindly let me know, regarding this. attached the screenshot for the same.

Thanks in Advance.
Saran