I found a bug in CamDesk: if I set it to be always on top and then I run a fullscreen application, e.g. Firefox in full screen mode, it disappears.
I searched the web and there was a bug report in Compiz (https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/789827), but the developer said it has to be fixed in the application (for example Onboard really stays always on top)
I found a bug in CamDesk: if I set it to be always on top and then I run a fullscreen application, e.g. Firefox in full screen mode, it disappears. I searched the web and there was a bug report in Compiz (https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/789827), but the developer said it has to be fixed in the application (for example Onboard really stays always on top)