Login Page on IE not Displayed Correctly (seems no CSS Loaded)

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Hi Guys,

Need help, I am working on Concrete5 site for internal use and I found something weird,
- If I login to the site with id address = login page displayed correctly
- if I login to the site with DOMAIN NAME = login page displayed wrongly (check on attached file - left=with IP Addr; right = with domain name)
- This issue only happened on IE-11; others browser working just fine
- I already try fresh install everything but still not-working
- Since this is for internal use and IE-11 is the default browsers, its critical for me to make the login page displayed correctly

please advise

Andy

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