I haven't been able to reproduce this no matter what I try... even with the inclusion of Merged Cells [which normally botch anything :-)]. Nor have I seen any similar complaints from other users. Is the cell content rendered by a formula? Or was it typed
into the cell?
Have you tried simply restarting your Mac?
It would also help to know;
- Your present version update level of Office 2011
- Your version of OS X
- Whether you've tried in a different sheet... In a different workbook file
- A detailed description of the nature of the source, content & structure of the file
- Exactly what steps you're taking
- What formatting is applied
- Any additional detail you can provide