It's happening consistently for me on your new games in itch on Windows 10, Chrome 124.0.6367.60 (Official Build) (64-bit). Console shows the error "Uncaught (in promise) DOMException: screen.orientation.lock() is not available on this device."
Update : I just found out that the clear also occurs when I resized the page (CTRL / Command + Mouse wheel)
should be fixed now though? try force reload. (I fixed the bug in puzzlescript)
Works now !