Device: Galaxy S7. I've used Whatsapp for years and always had (and still have) Back up to Google drive set to only when I click 'back up'. Just over a week ago, I enabled end-to-end encrypted backup, it seemed fine. But since then, every morning my phone shows for some time (10-20 mins) Backup in progress as notification. Also below the 'back up' button it reads Your backup is being end-to-end encrypted for the first time. This process can take a while. Which seems strange as I thought this had completed over a week ago.