Cool! It was a clever solution to have only one block to build the path, with that you can create a lot of puzzles and challenges. Just had some trouble syncing the jump and then clicking to put the next block at the same time.
As a suggestion, what if when the player clicks to build the next block, the current block takes a little time before vanishing? This way, the player would have some quick time to move before falling. I think this small change could facilitate the gameplay and then lead the player to focus on solving the puzzles, instead of struggling with the jump.