Besides the flicker, it also renders blank windows sometimes.
I will try the master. Thanks.
在 2020年2月16日 +0800 PM7:27，Alan Third <alan@idiocy.org>，写道：
> On Sun, Feb 16, 2020 at 11:47:50AM +0800, HaiJun Zhang wrote:
> > Will this be fixed before emacs 27 released?
> > The whole frame flickers which makes me uncomfortable. Hope it will be fixed.
>
> I’ve pushed a fix to the master branch, but unfortunately I don’t
> think the fix will make it into Emacs 27. The fix has noticeably worse
> performance than the current Emacs 27 branch, and even though I think
> it will be fast enough, I can’t guarantee it for all situations. As a
> result I’d rather the fix isn’t applied to Emacs 27 just in case we
> end up doing a release that breaks people’s workflows. The current
> bugs in Emacs 27 are annoying, but they can be easily worked around.
> --
> Alan Third