SUMMARY This is the version supplied with Mageia 8. (K3B v20.12.0) After successfully burning a 3.6G ISO file to DVD, attempting to close K3B (v20.12.0) just totally locked up. I tried clicking the "X" in the top right corner (I use Plastik) but nothing happens at all. I can minimize it, but that's all. ps ax shows a STAT of SLl (I don't know what that is) The only way I can close K3B is to use the Kill PID command. I note that it DID close when burning a data file (not an ISO) to a DVD STEPS TO REPRODUCE 1. Burn an ISO file to DVD 2.Try closing K3B using the "X" in the top right corner. 3. OBSERVED RESULT K3B froze solid. EXPECTED RESULT It should have closed. It didn't. SOFTWARE/OS VERSIONS Mageia 8 Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION