If the problem happens only when running beryl that's a beryl bug, beryl is not packaged to Ubuntu yet so launchpad is not the right place for that bug, better to contact the people making the package you are using
If the problem happens only when running beryl that's a beryl bug, beryl is not packaged to Ubuntu yet so launchpad is not the right place for that bug, better to contact the people making the package you are using