Pedro Andres Aranda Gutierrez <paaguti@gmail.com> writes:
> It definitely looks like that, because it doesn't happen on my macOS
> Emacs (compiled from the same git as for Linux). When I return home, I
> was thinking about compiling Emacs on Linuux for GTK3 but disabling
> CAIRO... would that make eny sense?
Yes, that would eliminate the bug.