It's been missing since the implementation of the patch. I guess it has something to do with the damn apostrophe. The production doesn't show for every building having apostrophe in its name.
This record is useful, because you can keep a better eye on what you spend each week or month to produce what you need etc. I did that for some time. It is amazing how many pieces I produced each week and how many gold I had spent on producing stuff.
"We ourselves feel that what we are doing is just a drop in the ocean. But that ocean would be less, because of that missing drop."
Diannadark I use it when a new production upgrade comes out and the usual production amount changes. Until i memorize the new numbers it's really helpful to me.