validates :on and :if broken in edge?

I just noticed that my :on and :if conditions on my validations do not
appear to be working in edge. For instance:

   validates_presence_of :password, :on => :create

will validate even on update. And this:

   validates_uniqueness_of :email, :if => :email

will validate :email even if it is empty.

This was working in 1.1.6 and prior. Can anyone verify this bug in
edge? If so, I can digg in a bit further.

Thanks,
Tom

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Actually, it is not broken. It turned out that WhitespaceKiller
(which sets model attributes to nil if they are empty) was not working
on edge. I did not dig into why it did not work, I just replaced the
:if => :email calls with :if => Proc.new {|u| !u.email.blank?}

Tom