@kazord the worker is probably not any more useful, anyway it is not launch in a separate thread anymore.
If I remove libertineProcess.waitForFinished(-1);
the process is immediacy killed
Nov 14 00:03:23 ubuntu-phablet aa-exec[11123]: Application "firefox" starting into containers "libert1"
Nov 14 00:03:23 ubuntu-phablet aa-exec[11123]: QProcess: Destroyed while process ("lomiri-app-launch") is still running.
Nov 14 00:04:24 ubuntu-phablet aa-exec[11123]: QObject::startTimer: Timers cannot be started from another thread
The code does what I want, but it remains me some stuff before publishing the fix.