Created attachment 176619 [details] Screen recording illustrating the bug Operating System: Gentoo 2.17 KDE Plasma Version: 6.2.80 KDE Frameworks Version: 6.10.0 Qt Version: 6.8.1 Kernel Version: 6.13.0-rc2-a446e965a188+ (64-bit) Graphics Platform: Wayland Processors: 32 × AMD Ryzen 9 5950X 16-Core Processor Memory: 62.7 GiB of RAM Graphics Processor: AMD Radeon RX 6700 XT Manufacturer: ASUS Steps to reproduce: 1. Start Plasma without a display manager as follows: export QT_QPA_PLATFORM=wayland-egl exec /usr/bin/startplasma-wayland 2. Copy something to the clipboard 3. Hover over the desktop 4. Clipboard contents will be replaced with old Klipper history Workaround: Don't start startplasma-wayland with QT_QPA_PLATFORM set. I noticed that this isn't set when logging in from sddm. I had this set in a startup script I use to start Wayland compositors. I don't remember why I had this set (likely a remnant from the past) but perhaps plasmashell could unset it to prevent causing issues although maybe that's not possible if it needs to be done before Qt?
"wayland-egl" isn't supported anymore, yeah. I'd recommend removing it from any of your scripts. The default "wayland" is preferred now.
(In reply to Nate Graham from comment #1) > "wayland-egl" isn't supported anymore, yeah. I'd recommend removing it from > any of your scripts. The default "wayland" is preferred now. Do you know why it breaks the clipboard though? It just occurred to me that the start plasma Wayland script count and probably should sanitise this. I know some stuff in KDE calls qunsetenv so maybe that needs to be done here in case somebody else makes the same mistake by accident. This way the correct QPA (unset, with Qt internally defaulting to Wayland) always gets set.
I don't, sorry. Offering robustness against known invalid configs is indeed a worthy goal, though. However it's also an infinite task since there are an infinite number of issues, which means dev team resources for it are always limited. Feel free to help us out by submitting a merge request to harden this up if you'd like! That would be grand.