Thank you for your comment on our game, cheers! The dialogue bug appears occasionally on some devices sometimes, we tried to fix it before, end up finding it might be something about the PowerPoint and the font themselves, which was sad because I couldn't control them...reopen the game and run it again may fix the problem. It is great that you let me know that the bug still exists on some devices, I'll add the suggestion to our description.
Glad you liked the game!