I have tested in different computers with AMD/ATI graphic cards and all has this bug.
Macbook Pro 8,2: 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series]
iMac: 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI M56P [Radeon Mobility X1600]
I have tested in different computers with AMD/ATI graphic cards and all has this bug.
Macbook Pro 8,2:
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series]
iMac:
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI M56P [Radeon Mobility X1600]