Symptoms
Their is an expression that is used throughout all of our forms that saves the current date in the 'd' format into a smartobject.
The system value 'Current Date' which is formatted yyyy-m-d can be saved, but we need it in m/d/yyyy format.
When displaying the expression it looks fine in a field, it's only when we go to save it into a smartobject that it doesn't accept the value.
Diagnoses
The expression looks like it might be set up incorrectly or is surfacing a bug when being parsed into the SmartObject.
Resolution
We found a workaround by applying an expression to concatenate the DisplayName and format date and time (current date, d) into a single expression (i.e. concatenate(DisplayName, on, Format Date and Time (Current Date, d))).