email not in chronological order

[Lexus501]

I've recently noticed that my "sent" emails are not being shown in  chronological order, by date/time. I've tried the up/down arrow to change the order but it still shows emails in a random order.
Searching seems to indicate that this is an ongoing problem?
Thanks for any help
Dave

[Lexus501]

Fixed. 

[gerstavros]

Fixed. 

Could you share how did you fixed it please?