New mail indicator

There was a new feature that under certain circumstances (I believe fetching manually, as far I can remember), any new messages are not indicated.
As the fetching of new mails usually takes a few seconds that are not indicated at all, I have to either wait a few seconds or to see any new mail only the next time.
It would be good if the indication of new mails was configurable.

I’m not sure I understand the issue. Are you manually refreshing a folder, then leave the app or switch to another folder before the app is done refreshing the folder and new messages are displayed in the message list?

The procedure: I am manually fetching new mail in the common folder. When I immediately switch to another app, I get no indication whether I have new mail or not, since this takes a few seconds. So I have to wait for a few seconds until I think that it finished fetching and then switch.