Created attachment 106143 [details] Screenshot of shutdown dialog Hello. I upgrade Qt in KDE Neon Developer Unstable from Testing repo to 5.9.0. In plasma-wayland shutdown dialog now shown as window (as in screenshot).
This bug no longer appears for me in: Distribution: KDE neon Developer Edition Unstable Branches KDE Plasma Version: 5.10.90 KDE Frameworks Version: 5.37.0 Qt Version: 5.9.1 Kernel Version: 4.10.0-32-generic OS Type: 64-bit
*** This bug has been marked as a duplicate of bug 381045 ***