It's far from obvious from your image what the 'something happend' relates to. At a guess, it might relate to the feint shading. As a further guess, that might be field shading, which you might be able to eliminate by selecting the shaded content and pressing Ctrl-Shift-F9.

Otherwise, before anyone can make an informed suggestion, you will need to attach an actual document to a post with some representative data (delete anything sensitive). You can do this via the paperclip symbol on the 'Go Advanced' tab at the bottom of this screen.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]