Same here with Firefox on GNOME on Arch. I do have amusement when the author says it's a black square on every renderer he's tried, but we trivially trigger so

Same here with Firefox on GNOME on Arch. I do have amusement when the author says it's a black square on every renderer he's tried, but we trivially trigger something else :) Seems like he's on Mac OS X and so I guess it's down to platform quirks.