Office 2013 - All office applications have sizing and title bar issues

Hi

OS: Windows 8.1
Office Version: Professional Plus 2013

Every office application I open seems to have a classic unthemed title bar and not maximise correctly. When opening an office application a number of things happen:

• The application opens behind any open windows
• The application when maximised appears to be open full screen with in an invisible frame
• Drop down lists within the application instantly close when clicked on

Here are few images showing what I mean:





Steps taken to try to rectify the problem:

• Reinstalled Office after having used Revo Uninstaller to remove any left over traces
• Rolled back to a time I don't believe the problem existed, thought this may have existed from the start but never realised due to lack of use
• Reinstalled Graphics Card drivers
• Turned off any OS resizing options
• Tried changing the OS theme back to default
• Tried changing the screen resolution

I should also mention that this only affects office applications and no other applications seem to have any issues like this.

I know I can get around the issue of it being maximised, as can be seen from the screenshot. The issues with dropdown boxes etc is a pain, any help you guys can give would be appreciated

I tried the repair option which completed and the restarted the machine, this doesn't seem to have solved the issue.

I have now also now tried sfc /scannow which didn't help at all