Note: these steps only apply to database tables linked from a direct database export and not from a SQL view.
  1. Right click on the field and select Format Field
  2. Go to the Paragraph tab
  3. Change the Text Interpretation to RTF or HTML
  4. Click OK
  5. Refresh the report
If this does not resolve the issue, copy the comment to Notepad to remove the formatting. Copy it from Notepad and paste it back into the database.