I can't reproduce this on my current Quantal machine.
unity 6.2.0-0ubuntu4 (nor under 6.2.0-0ubuntu3) compiz 0.9.8+bzr3319-0ubuntu3 Intel graphics
Sorry I can't help more.
I can't reproduce this on my current Quantal machine.
unity 6.2.0-0ubuntu4 0ubuntu3
(nor under 6.2.0-0ubuntu3)
compiz 0.9.8+bzr3319-
Intel graphics
Sorry I can't help more.