Note - Using SharePoint 2013 social functionality (not Yammer).
It has been reported (and confirmed) by my Mac users that when they have a browser (confirmed for Chrome and Safari) hidden in the background for a period of time and then bring it back up later, the newsfeed notices (the number in parentheses that shows how many new items exist that are not currently displayed) does not update until either mousing into the newsfeed web part or reloading the page.
Does anyone have insight on how to fix this so that the number is updated without action by the end-user? Additionally, does anyone know what JavaScript is called to actually update the newsfeed number? I'm having trouble trying to decipher the .js files to figure it out. Thanks.