It's... SO... BEAUTIFUL!
I really mean it, I can't wait for the next version already XD!
I don't know why you removed the little white block that appeared where your cursor appeared, that's helpful.
I also can't wait for saving and loading, because i'll have to scrap my wonderful house. (Jk I made it in like a minute)

Though once there is saving and loading (or an update after) I will most probably host a map-making competition.
The sides aren't as glitched as the last version, but there are still a few problems
For example I found this while flying around:

And there is still the problem if you dig down far enough the top side isn't shown.
Actually I found it a couple more times, Always where a tree's leaves are intersecting with the ground.