When opened, emclient select automatically the first message I received in my mailbox

Good morning,
sorry for open a new post but I didn’t find a similar issue in the forum.

When I sort my inbox folder as “flagged” or “starred” (my emclient is italian) and once closed/opened, it selects automatically the first email received (in 2010!!!) so all the time I have to scroll the list to the top…
If I sort the messages as “received” the problem does not occur.

Thanks for your support,