Upgrade to 8.1 layout issue

Upgrade to 8.1 layout issue

We have just done upgrade to 8.1, it is working fine, but the whole layout is just a but funny.
I have cleared out all the cashe, temp files, cookies and tested on IE, FF, Chrome, and Safari and every where I get the attached issue. Looks like the buttons/tabs are not visible.

Regards
Mario

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