Gmail App not sync read mail properly, help


Android Enthusiast
My phone setup automatically sync, so that Gmail app also sync and it gives new email notifications. But the problem is after i read email, its not mark as "read" properly. So that if i visit Gmail using web browser or any other device, still i can see those mail as unread (if i visit after the sync). But my Gmail app display its read, but Gmail app "All mail" label display all the new mails unread, if i open them (All mail label like web based).

Looks like its not sync two ways.

Are there any way to fix it? Is it only for me?