max_jshint_notifications doesn't work on Windows 10

[hebroin]

I set up notify_hooks to display only 1 notification for 1 second, but I always get more and for like 5 seconds.

I know the options work because the title is modified correctly.

notify_hooks: {
            options: {                
                enabled: true,
                max_jshint_notifications: 1,
                title: "Project Name",
                success: false,
                duration: 1
            }
        }

grunt.registerTask('default', '', function () {
        var taskList = [
            'jshint',
            'express:dev',
            'watch'
        ];
        grunt.task.run('notify_hooks');
        grunt.task.run(taskList);      
    });

What am I doing wrong?
Thank you