Hi, thanks for reporting this. I have not seen this issue come up before, so I would like to have a bit more information.
Could you let me know which OS and browser you are using to play Serenitrove? Also, are you playing it through the itch.io page, the itch.io app, or the offline copy? And has this issue happened before or did it just start recently?
Edit: One more thing, does refreshing the page solve the issue?