ESS Service Catalog: Reference field choice list gets cut off if field is at the bottom

1. Log in to base system demo instance using Firefox 32.0 or 33.0, or IE10.
2. Navigate to Maintain Items. Open the item: [Apple iPhone 5]
3. Add a reference variable, for example: [Budget] with order 600 and select the table as User [sys_user].
4. Navigate to ESS portal > Order Things > Hardware.
5. Try the item you modified in the step 3.
6. Type the ** in the last field Budget on the form, and notice that the iFrame is cutting off the values from the dropdown.

Expected:
Iframe should expand the drop-down based upon the number of values available from the result

Actual:
iFrame is cutting off the values from the drop-down

If you are able to upgrade, review the Fixed In field to determine the versions that have a permanent fix to this issue.