Result: FAIL jQuery - .toggle() 1TypeError: Result of expression 'fn' [undefined] is not an object.
Possibly related to, or the same as, bug 25981.
Please try the latest recent nightly, where bug 25981 is fixed.
Yes, the test works with the latest nigthly. It seems to be fixed.
Marking as a duplicate per the above comments. *** This bug has been marked as a duplicate of 25981 ***