I've discovered this problem after upgrading to 12.04 alpha (unity 5.4).
The setting I have made with ccsm (since unity 4 ... then unity 5.2 ...) is :
Top Left --> scale plug-in (this setting gave me the behaviour of gnome-shell).
Top Right --> expo plug-in .
Bottom Left --> Dash trigger (by the way I'm not able to do that any more so I use the lowest value of the new parameter : "reveal sensitivity" in the appearance/Behaviour panel ).
The first anomaly (using ccsm) is that "Top Left setting" for "scale or expo plug-in" is not exclusive with "Top Left" setting for dash in Unity plug-in (reveal Trigger).
I have to execute 'compiz --replace' if I want the "Edge trigger system" working both for "scale plug-in" and "expo plug-in".
I've discovered this problem after upgrading to 12.04 alpha (unity 5.4).
The setting I have made with ccsm (since unity 4 ... then unity 5.2 ...) is :
Top Left --> scale plug-in (this setting gave me the behaviour of gnome-shell). Behaviour panel ).
Top Right --> expo plug-in .
Bottom Left --> Dash trigger (by the way I'm not able to do that any more so I use the lowest value of the new parameter : "reveal sensitivity" in the appearance/
The first anomaly (using ccsm) is that "Top Left setting" for "scale or expo plug-in" is not exclusive with "Top Left" setting for dash in Unity plug-in (reveal Trigger).
I have to execute 'compiz --replace' if I want the "Edge trigger system" working both for "scale plug-in" and "expo plug-in".