Hiya! Nice game!
I found a bug : at the beginning of the game, right after going up the 5 self standing platforms, if you go up onto the piece of "mountain" to the left that you can reach with the grappling hook instead of continuing right, and then go past it and down again the camera doesn't follow the character.
4 days ago(+1)
Yes, that's exactly it; I forgot I could post pictures in the comments aha. Good luck with problem solving!