I have similar issue with Chrome 94 on Windows. It's fine when I initially open the page, but once I click 'run' I can no longer use PgUp, PgDn, F12, etc. I'm

I have similar issue with Chrome 94 on Windows. It's fine when I initially open the page, but once I click 'run' I can no longer use PgUp, PgDn, F12, etc. I'm guessing the emulator captures some input. But even when clicking on other parts of the page, it doesn't 'uncapture'. FWIW, it doesn't really bother me.