bugseforuns added a comment.
I'm not a software developer, but I applied Rok's patch on Arch Linux and it fixes the problem when unmounting/releasing ISO images. Operating System: Arch Linux KDE Plasma Version: 5.15.4 KDE Frameworks Version: 5.57.0 Qt Version: 5.12.2 REPOSITORY R245 Solid REVISION DETAIL https://phabricator.kde.org/D20508 To: rokmandeljc, bruns, broulik, dfaure, #frameworks Cc: bugseforuns, kde-frameworks-devel, michaelh, ngraham, bruns