I'm enjoying this game quite a bit, and I'm looking forward to going more in-depth once I have finished. However, I've seemed to have found a glitch fairly early on.
After the second night cycle, I burst out of the house on the sled, and if you keep going past the porcupine and over that large rock is in front of that small cave with an opening above, you (or at least I) can't jump at all. It also leaves you in a position where you are permanently stuck since you can jump over the small ledge on the tip of the large rock on the left or up to the ledge on the right within the cave.
The only way to avoid the glitch is to stop before you make that jump on sled right in front of the porcupine. I can get off the sled and walk but not jump before the porcupine; however, when you interact with it by scaring it away or drawing it in the sketchbook, it then enables you to jump again.
I can still press the A button/confirm in the menus so you can easily exit and restart if you hit said glitch. Just thought that might be interesting to note.