Ok,excuse for double post,but i investigate a little and indeed is and error of delay,today i construct 3 scrolls manofactories and everrything was ok,after the building finish to construc the -population appear to me:
Practic my manufactorie eat more populationa after they are finished to construct...in my case i think are 8 for each one,i was having 22 free population after i set 3 scroll manufactories,now -2
(I dont know how much eat for some other type of buildings,is the eror persist i will be back with new info)
I hope this information is usefull for developers.