I think most games with voiceline and dialogue has it so the second click fully types out the dialogue but the voiceline just continues as normal. If you click again, it goes to the next dialogue text, and if the voiceline is ongoing, then it gets skipped. It does de-sync but in my opinion make raeding more enjoyable since while still reading the text, the voice line still plays.
Fun fact: I accidentally skipped the dialogue where the ghost teaches you how to use candy so I beat the game without placing a single candy (accidental challenge run lol). Once again, thank you for the game.