I have a Roll-Up Summary field on Opportunity called Max Stale Date which rolls up a DateTime field on a child object. I have an Opportunity where the value of this field is

Max Stale Date: 8/24/2014 3:13 PM. I have set up conditional rendering on a button with the criteria that Max Pricing Date is greater than TODAY

For some reason (even though today is 8/15/2014) the button does not show up, even more strange, when I change the render condition to less than TODAY, the button does show up. Does the greater than operator work differently with date fields?