Been looking around to see if there was someone who had run into a similar problem, but haven’t seen anything, so I thought I would throw in my experience with building glitches.
So I decided to make a dining hall from the premade template, but wanted to make a storage room in the back of the dining area where I can store food, but when I went to click on the existing back corner of the wall to extend it out, it gave me an error, which I am unable to upload right now because I am a new user apparently (backed this game years ago on Kickstarter, just never joined the support forum I suppose!). Basically it refuses to create a connecting wall between the existing corner and the new corner that I am trying to make and it makes building anything a hassle. It also bugs out saving the game as it keeps saying “Saving…”, which I thought meant that the game froze, but upon force quitting via Alt-F4 and reopening Stonehearth, it turns out the game was saved, just that the game never got rid of the saving prompt.
I hope this helps in fixing the bugs! Great game, I’ve been loving giving the game a try every now and then to see the progress! 
