SUMMARY I use Ubuntu 18.04 LTS. When playing kbreakout sometimes the mouse becomes unresponsive, as its focus exits the game window. It would be nice if the mouse could not exit the window unless after pressing some key sequence STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION