multi-stores' admin page redirect to default store's admin

I am facing a weird issue, which I am not sure whether is a bug or I am doing something wrongly.

I have installed OpenCart 2.0.1 to a domain name http://shop1.abc.com (fake name). Within this installation, I added a new store with domain name http://shop2.abc.com (fake name).

Going to admin page for default shop <http://shop1.abc.com/admin> looks ok. But going to admin page for second shop <http://shop2.abc.com/admin> looks weird as though the CSS stylesheet formatings are gone. Refer to screenshots attached.

Logging on from http://shop2.abc.com/admin will redirect back to http://shop1.abc.com/admin.

Is this normal?

It is normal.

Does it bother you much?

I think you are confused on how multistore works.

You can set up as many multistores you want and they are all controlled from the same admin - that is the way the feature works and the beauty of it. You don't have to log in to each store separately, all orders and products are in 1 control panel and you can designate which products appear on which store.

You can look at the stores in my links - I have 30 stores all running from 1 installation/admin of opencart on labeshops.com