Please fix bug with repeated display of email. Every time I start Waterfox/Firefox I keep getting the same notification at bottom right of screen for the same exact emails for the 10th time. It keeps doing this unless you open the email or otherwise mark it as Read. Isn't it should only show the notification one time only, regardless of whether you read it, or there should be an option to ensure that behavior.

I have "Previewing marks as Read" enabled and "Repeat notification"and "Show notifications for older" both disabled with 30 second polling for Primary category for my Google Apps gmail account with the latest v22.2.2.1 for Waterfox on Windows 10 x64.