I just upgraded Office 2010 to Office 2013 on my Windows 8.1 notebook, and Word 2013 is doing something I've never seen before. I prefer to work in Print Layout view. After I've been working with a document for awhile, or more readily if I open multiple .docx files, the entire Word window starts to get glitchy. Random lines and characters appear in the document area, as if the document has been corrupted (it hasn't). Some lines of text in the document go missing, or else are duplicated. Word tables are totally scrambled. Then parts of the Word window outside of the document area begin to randomly deteriorate. Icons on the Quick Access Toolbar disappear or become corrupted in appearance. Areas on the Ribbon do the same thing. The commands on the action bar disappear. If I mouse over any of these decrepit areas, they are restored, except for the document area, which just gets worse and worse.
Switching to Read Mode view or Draft view immediately clears up the entire Word window, after which I can switch back to the Print Layout view and everything will be OK for at least a little while. Then the problems start up again.
Note that this behavior has not occurred with Excel 2013 or Powerpoint 2013 or Outlook 2013, only Word 2013, and only on my Windows 8.1 notebook. Word 2013 is operating normally on my Windows 7 desktop system.
Also note that when this happens, all other programs running on my Windows 8.1 notebook are unaffected. The issue is specific to Word 2013.
My system is up to date, with no pending updates available.
Any assistance appreciated.