Unicode characters' slash is escaped when entering into a single field

The Problem:
When entering a Unicode character into a document with Futon's Fields view (not whole doc) the back slash is escaped, thereby breaking the Unicode character. This does not happen in the Source view.

Steps to Reproduce:
1. Create or open a document.
2. Add "\u2708" to the value of a field.
3. Save the document.

Expected Result:
The field's value should be "\u2708"

Actual Result:
The field's value is "
u2708"