https://bugs.freedesktop.org/show_bug.cgi?id=90264
--- Comment #2 from falaca@gmail.com --- Michel, I just tested it right now, and there is no corruption when I set LIBGL_ALWAYS_SOFTWARE=1.
The screenshot I linked to is from the glowing-bear web IRC client, and I just need to mouse over 2 or 3 items before the corruption shows up, so it should be pretty easy for anybody else to reproduce with Chrome.
Further info: I'm running linux 3.19, Xorg 1.17.1, and both mesa & DDX from git.