Some text shadows do not appear in other versions of Word

Cause: The document was opened in an earlier version of Word.

Solution: Apply the shadow to the text within the text box, not to the text box itself.
Solution: Apply the shadow to the text within the text box, not to the text box itself. [Compatibility Mode]
Solution: Remove the shadow from the text box.
Solution: Remove the shadow from the text box. [Compatibility Mode]