Typed characters are mis-ordered when CPU usage is high

[Kaz Kylheku (Cygwin)]

On 2022-02-27 06:53, Takashi Yano wrote:
> I think this is due to a bug which I recently fixed.
> https://cygwin.com/pipermail/cygwin-patches/2022q1/011791.html

Was that upstreamed? Sorry to be a pain, but something in the
log message about the cause and the fix (not just the manifested
issue being addressed) would be good.

Reversed characters might mess not only with the user's input,
but with input coming from terminal emulation, like escape
sequences, which may be a worse problem.