在 2019年10月27日 +0800 PM3:12，Eli Zaretskii <eliz@gnu.org>，写道：

From: HaiJun Zhang <netjune@outlook.com>
CC: "emacs-devel@gnu.org" <emacs-devel@gnu.org>
Date: Sun, 27 Oct 2019 07:00:04 +0000

Setting redisplay-dont-pause to t causes other problem for emacs after 26.2, which is worse than this one.
See https://lists.gnu.org/archive/html/emacs-devel/2019-01/msg00495.html

Sounds like all of this is specific to NS. So maybe the solution
should also be specific to NS, like maybe the change that you say
started all this should be disable on NS.

Yes. All these problems only happen on macOS. Then it is hard for me to debug. I’m not familiar with NS development.