https://bugs.freedesktop.org/show_bug.cgi?id=74764
--- Comment #12 from Kertesz Laszlo laszlo.kertesz@gmail.com --- (In reply to comment #11)
I definitely have this problem with latest git, didn't try early version. With STEAM_OVERLAY=0 it works flawlessly, unfortunately this is not a solution. With Catalyst it works flawlessly even with STEAM_OVERLAY=1.
I use mesa+kernel from git with a A8-6500 APU/Radeon HD 8570D IGP ( that uses r600g and steam overlay works at least with Day of Defeat and L4D2. Debian Testing 64 bit, xfce 4.10.