I confirm the bug on 12.04 amd64 . I have just noticed it today when
Activating/deactivating the dash might work around it.
Can reproduce it this way:
Reduce all windows, Go to compiz Settings (Or a dedicated tool like MyUnity), set Panel Opacity to a value close to full transparency, set Toggle Max Windows to ON : The Panel transparency is reset to 0. Maximize a window and reduce and maximize it, nothing changes.
Go to compiz again to set Panel transparency value: it has no effect.
Activate then deactivate the dashboard: the panel transparency is back.
I confirm the bug on 12.04 amd64 . I have just noticed it today when deactivating the dash might work around it.
Activating/
Can reproduce it this way:
Reduce all windows, Go to compiz Settings (Or a dedicated tool like MyUnity), set Panel Opacity to a value close to full transparency, set Toggle Max Windows to ON : The Panel transparency is reset to 0. Maximize a window and reduce and maximize it, nothing changes.
Go to compiz again to set Panel transparency value: it has no effect.
Activate then deactivate the dashboard: the panel transparency is back.