From: Adam Porter <[email-masked]>
Date: Tue, 7 Apr 2020 07:43:02 -0500

It seems that the issue Ihor reported may be caused by org-refile.el
not loading org-macs.el.  However, the issue I reported in bufler.el
does not seem to be the same problem, because the bufler-defauto-group
macro is defined in the same file in which it is called.

BTW, please note that I neglected to include the setting of
comp-deferred-compilation in my ECM.