This started working for me again in the latest build, FYI. Thank you,
although it probably had nothing to do with my terrible bug report.

On Thu, 31 Dec 2020 at 15:30, Eamonn Sullivan <eamonn.sullivan@gmail.com>
wrote:

> I've filed a bug report here (my first!) because I run two computers, one
> with emacs 27.1 and one with emacs 28.0.50/master. This configuration works
> on 27.1, but not on 28.0.50.
>
> I actually can workaround the issue easily, but I really love the native
> compilation and want to see it succeed. I thought I found something that
> might affect other packages. Just trying to be helpful.
>
> A minimal config that can reproduce the problem is here:
> https://github.com/eamonnsullivan/emacs.d/blob/master/minimal-init.el
>
> Thanks again,
> Eamonn
>
> On Thu, 31 Dec 2020 at 15:18, Eli Zaretskii <eliz@gnu.org> wrote:
>
>> > From: Eamonn Sullivan <eamonn.sullivan@gmail.com>
>> > Date: Thu, 31 Dec 2020 14:40:03 +0000
>> >
>> > It is not, no. It is in melpa: https://melpa.org/#/key-chord.
>> >
>> > I don't explicitly load that, but it comes in via dependencies of
>> another package.
>> >
>> > If it's not supported in 28, I'm fine with that. (And closing this
>> ticket.) I don't use it for much.
>>
>> If this is not an Emacs package, then I suggest to report the issue to
>> the package developers first, and ask them to come back here if they
>> think the problem is in Emacs core.
>>
>> Thanks.
>>
>