On Thursday, 14 Sep 2017 at 11:11, Loris Bennett wrote:

[...]

> It obviously does work, in principle, for me too, as the re-eval shows.
> However, it seems as if something later in my .emacs undoes some aspect
> of whatever it is that the gnus-icalendar-org-setup does.

Well, may be time to bisect etc...?
-- 
: Eric S Fraga via Emacs 26.0.50, Org release_9.1-57-gc6e563