JWT loggout when pressed refresh button Spring boot and angularJS

I am using a project from this git repo git repo. I started the project with mvn spring-boot: run and user is admin: admin. Everything works fine but when the refresh button is pressed I am redirected to the login page and I am logout from the app. Everytime is same. Maybe someone know why this app loggout when refresh button is pressed. Thanks ( I cant paste code because i am still researching and learning code)

Source: AngularJS