Vincent Lefevre <vincent@vinc17.net> writes:

> with libfreetype6 2.6.3-3.2 (emacs-263.png, what is expected) and
> 2.8.1-0.1 (emacs-281.png, buggy). The behavior with a GNU Emacs
> 27.0.50 snapshot from August 2019 and libfreetype6 2.10.1-2 seems
> identical to emacs-281.png (i.e. nothing has improved).

Using

    ftcrhb:-PfEd-DejaVu Sans Mono-normal-normal-normal-*-25-*-*-*-m-0-iso10646-1 (#x957)

and

libfreetype6/stable,now 2.9.1-3+deb10u1

(although I'm not sure that's what Emacs uses), I don't get a buggy
display in Emacs 27: