I think I figured out what's going on.
Working on a fix right now. Thank you for your quick answer.
Thank you so much! And thank you for making this game. I would love to see Korone play it, I'm sure she would really enjoy it.
I uploaded version 1.02 for Win/Linux. This should have the movement issue fixed.
The web version will be updated later as the Unity build takes longer for WebGL and I need to do some additional tests on that one.
Let me know if it works on your side! Thanks!