Lots of issues trying to make my own design. Awful system, won’t play again for a while.
V23 Alpha
Trying to make a 2 story house with overhanging top floor.
1 First forgot the beds downstairs and had placed 1st floor, so had to delete and start again - I’ve now disabled the Auto Save so the Undo works - ridiculous
2 Then made 2nd floor overhang and walls, but then discovered door needs 1 block of wall either side, tried to delete the walls - you can’t !
3 Then placed the roof and it looked awful, and the undo or delete didn’t work.
4 Then tried to place the external steps, but there happened to be a bronze ingot on the floor where I was designing, so the stairs couldn’t be placed.
5 The last straw was when trying to place the upper floor beds. The first 2 were fine, then refused to place more. I tried to delete 1, and it just flipped it around, trying to delete the other bed, it then started cloning the beds, and they were overlapping ! couldn’t delete or undo.
I then said to Delete the entire building (as I’d done with the previous problems), but it wont. I’m now stuck with a well developed world with a stupid, faulty building in it. Great, have now given up on the game.
Each time I ended up starting over. After 2 hours I gave up on the piece of cr*p 
Looking online, people have been complaining about these issues for over 2 years, so clearly NEVER going to get fixed, I’m just so cross. I really like the game, but haven’t played it since V20, now I remember why :(((