Hey there, thank you so much for reporting this bug 
I assume the second one you mentioned, about “characters stopped aging on their own”, is similar to the one reported here: Townies don’t age up anymore → If so, please also write a reply in that thread about it, because this really helps to bring more attention to the matter =)
About the building bug: I don’t know about any similar report yet, so it is very likely that at least it hasn’t affected numerous players so far. Does the issue still occur when the mods are disabled + removed from the game’s folders? They are known to cause a lot of trouble, so it’d be really nice if you can check that 