I'm in Chapter 3.
I can now see in research that a new residence will first appear in Chapter 6.
1.5 magic fills the same as 1 regular.
so magic = 375 and regular = 420.
so I think I put magic in stock because they are not good enough Just now.
a little annoying
It only when it is 1 manufactories left.
and I push on a manufactories that alredy start, go to 1 free, Upgrade
then I Can not get back to production
I have just tried on dk live server it is the same.