From v16.12 onward a new reporting system has been brought in for the ESE clients within the Console.
You will find next to the ESE icon a small circle that will be filled with a colour based of the last backup attempt status.
There are 5 different states;
Green - Successful Backup
Yellow/Orange - Backup completed with warnings
Red - Backup completed with errors
Red with an X - Backup failed
Grey - No backup attempts/SE client
You should find these icons match up to the "Last Backup Status" column and provide easy identification of failing backups from the console.