Someone else mentioned the same problem. When you say second gap, which one are you talking about? Doesn't the character jump?
Viewing post in Into the Small Door jam comments
Oh i see. No, you're not missing anything. It is my fault .
Due to the game's gravity code, the character jumps too much on devices with low fps. I think the opposite happened for you too. More fps, less character jumping 😥.
Let me fix it. I'll let you know when I upload the patch!
I'm sorry again for the problem