Hi! Thanks for playing both of our versions :)
Damn, the bug is really weird, I have it too. But what I could notice is that it doesn't work on all browsers. I'm on Firefox and it's there, but it doesn't appear in Chrome. I ran through Itch and tried different games with the web version on Unity. And everyone has this problem on Firefox. I don't know about other browsers. I'll try to find a solution, but in any case, if you encounter this in other games, changing the browser seems to help.