Missing 'element' member from ui hash for events in 1.6rc4

Hi. I'm trying to get the UI Layout Demo going with the latest 1.6rc4
release but I ran into a bug, I think. In 1.5.2, there is an 'element'
member in the 'ui' hash object passed to event functions such as
'change' and 'update', but that member isn't present any more.
Is there a recommended alternative?