The game is really nice, even though it's still a demo. I played for about 6 or 7 hours and didn't encounter any major bugs, although there are issues, that I'm sure are already being worked on.
I don't know if you are aware of this particular bug but I'll say it anyway. When you want to craft something, the game will in some cases use more items than the amount actually required. Let's say you want to craft a leaf skirt, which requires 12 plant fiber. If you have an inventory slot with 5 plant fiber and another slot with 20, the game will take 12 plant fiber from the 20 but it will also use up the 5 fiber from the other slot( so 17 are being used rather than the 12 required). In this case it's not that big of a deal but you can imagine this could be less than ideal when using rarer items.
I know it's cliche but I genuinely think the game has a lot of potential. More options for building, more diverse enemies, a better combat system and maybe even skills or powers your character could use... Anyways, I'm excited to see what will become of this and wish you the best with the further development of the game