Read Notifications not working

Has anyone experienced read notifications not working consistantly. I have the correct icons selected but not all opens result in a me reciveing a notification. I have sent mails to people using Gmail, Outlook 2010 , plus others. I know they have been opened as the recipent replies but I do not recieve a read notification when the sent mail is opened for the first or subsequent times. I am running version 1.10.3-a476c230 on a windows 10 PC. Read notifications worked fine on previous versions of Mailspring.