You specifically mean the gunshot when you get the rifle right? Yeah, I have been meaning to fix that. I will raise the "interaction area" for most things, many people have noted that just as you. Later characters work differently with the dialogue trees, initially I wanted the first one to be like that to teach the player to interact with characters several times, but it just doesn't work, so yeah.
Your feedback is very clear and precise, I appreciate it. If you play it further and get more, do tell me. I have compiled a list and posted it here among the comments, you can check if you see anything missing. I will do an experiment with the table, but I am afraid it might ruin the "sort of visual symmetry" of the map.