I made a Survey based on a feature service for verifing a set of assets inspected earlier.
The first question is about time of inspection and in "calculation" filed I use "today()" formulas for insert automatically a value based on ispection date as expected. Apparently it seems that everything works properly.
as you can see

But if I press validation button, it seems as the value is not properly inserted.

And then if I cancel value inserted by formulas with X button and hit refresh button for an updated value (obviously same value you see in this sample), then validation is successfull.
This is not the first time I create a Survey, but this is the first time that I'm trying to update a status of an existing object.
Any idea?