Kevin Brubeck Unhammer <unhammer@fsfe.org> čálii:

[...]

> I see the same on org-mode
> 9.1.9 (bundled with Emacs 26.1) or 9.1.12 and 9.1.14 from melpa-stable,
> gnu elpa.
>
> I do *not* see this in 8.2.10 bundled with Emacs 25.3.2.

git bisect tells me
8c7a14a850e7b988fe4c9d0eea9207793e2af368
introduced this.