I have submitted a ticker on this same issue and clearing the cache and rebooting the web browser does not work. It is hit or miss on this issue where my other email accounts show a notice that an email was received but the email is not shown in the viewing panel and I have to access the accounts via my cell phone to review the email. If I switch back to Basic Email, then I can view all email accounts emails as well. It happens with other Yahoo accounts and the Gmail account I have added...