This is a pretty old post, but I figured I'd post this answer incase it helps anyone else in the future. I found the solution to this problem here:
http://forms.stefcameron.com/2006/07/26/seeing-the-entire-value/
And just incase the link stops working:
1. Select your text field
2. Go to your font palette
3. At the very top of the font palette, make sure your selector widget is set to "Currently editing value properties"
4. Set your font size to 0
This will allow the text to shrink as necessary to fit the text box. It's sort of counterintuitive, but it does work!
Hope this helps!