keyup and keypress event in chrome/firefox keeps firing when holding a key

[raoofha]

Hi and thanks for the awesome x2x
I don't know if this is a chrome/firefox bug or it's x2x bug.
when I use chrome/firefox via x2x, keyup and keypress events keeps firing after holding down anykey.
to reproduce

open new tab
press F12 to open devtools
on console tab enter 
    document.addEventListener("keyup", console.log)
select window
press anykey

[dottedmag]

Sorry, the project is dormant, so it will have to wait for another maintainer to step in.

[egirard]

The chromium issue tracking this has been closed:
https://issues.chromium.org/40656778 when using x2x, holding down a key cause keyup and keypress to keeps firing