Comment 6 for bug 1355936

I am having the same issue. DId not with the Beta of Freya nor do i have this problem with LUNA. I will stay with Luna for now until an apparent fix is applied.

From what i can tell, the flickering is not caused by just one action, but seems to be tied into desktop transition effects, fade, transparency etc. My first initial guess (often the most accurate from the gut) is perhaps this flickering is caused by the new TASKBAR???? I have seen that it is mostly fully transparent, but sometimes turns dark grey or black like in Luna, but depending on your wallpaper? Is this a new feature for Elementary keeping with the times? Etc Ubuntu Unity AUTO-Matches colour themes to wallpapers as does Windows 8 and onwards.

This is about the best i can come up with. Im no developer but do have an eye for diagnosing stuff :)