I had this issues just after hiding the launcher, but after a restart it seems to work.
BTW: Can anyone reveal the launcher with a touchscreen? Using edges for showing the desktop etc. with compiz works, but no chance with the launcher. The sensibility behavior should have an option that allows to reveal the launcher by just moving in the edge without pulling against it.
I had this issues just after hiding the launcher, but after a restart it seems to work.
BTW: Can anyone reveal the launcher with a touchscreen? Using edges for showing the desktop etc. with compiz works, but no chance with the launcher. The sensibility behavior should have an option that allows to reveal the launcher by just moving in the edge without pulling against it.