This issue occurs with tables...
Solution:
1. Click on view menu at the top
2. Choose XML Source, then click XML source tab
3. In your "Hierarchy" click on the table row you are having issue with
4. Your cursor should move to applicable location within XML code
5. Paste the following code right before "<value>" tag
<ui>
<textEdit/>
</ui>
6. Click back to Design view, it will ask for you to save
For more info: See this thread...Unidentified "Untitled <draw>" object in table cell