These are mostly minor annoyances with Blacksmith shop.
Pathing to ore/coal storage: Character will walk through the wall from outside to get items inside. This happens when you click on the storage from a distance back. If you click the ground before the container first then the container he will access properly.
Cannot open the door when carrying. Probably intended , but I wanted to let you know.
Smelting bugs and issues. (Already stated in other posts)
Smelters have smoke coming out even if empty. Minor, but makes it hard to tell quickly which ones are ready to load.
Sometimes the wooden covers outside will not disappear correctly making it hard to access smelters, etc.
Again, these are minor, but I wanted to point out.