In this file
components/page-layouts/Auth.vue Line 62
change REMOVE_BODY_CLASSNAME to REMOVE_BODY_ATTRIBUTE it is wrong line you need to remove the attrs not the class
Or you have to remove it so the background still there
We are adding a bg-body class to add a white background color which is required by auth pages.
No the line I mentioned used to remove the attrs from the body when the component is unmounted, also it gives error in console when you login and forward to the dashboard, please review it
Oh right it is a bug, we will fix it in upcoming Metronic releases.