I've recently upgraded to the latest Xorg and Xorg intel driver in sid,
and I've noticd corrupted rendering of the terminus-oblique
font in my terminal (rxvt-unicode-256color). The problem is consistent,
in the form of missing pixels in the upper right areas of each glyph,
manifests right from the start of the session, is independent of the
kernel version (linux 3.16 or 4.0), and does not present itself when I
force xorg to use the modesetting driver instead.

The rendering issue only seems to appear in rxvt-unicode and
rxvt-unicode-256color though (e.g. not in konsole or gnome-terminal, nor
in xterm or xfontsel).