Gerd Möllmann <gerd.moellmann@gmail.com> writes:
> I tried your recipe here with emacs -Q (Emacs 28.1 from Homebrew) in a
> maximaized Terminal.app window, with a font as tiny as I could get (with
> Command +/-). I could not reproduce the flickering.
>
> Does this happen for you with emacs -Q in Terminal?
BTW. this was
GNU Emacs 28.1 (build 1, aarch64-apple-darwin21.3.0) of 2022-04-30
and I'm running macOS 12.5.1.
Maybe someone else having access to maxOS 11 can reproduce this?