Word for Mac: Highlighted Text Disappearing

I am using Word 2011, 14.1.4. I have several tables in my document, and some of the cells have shading. Sometimes (it does not happen consistently), when I shade a cell, all of the text disappears except for the last line. This only happens in Print Layout view. If I view in Draft or Print Preview, the text displays correctly. Unfortunately Print Layout is my preferred view, so it's annoying to have the text not shown.

I've attached a document with two screenshots to try to illustrate the problem.

When colleagues using the same version of Word open the document, they do NOT see the same issue.

Thanks in advance for any help.

View attachment ShadingIssue.doc