NOTE: Requires a dual screen setup STEPS TO REPRODUCE 1. Download the current Fedora KDE Nightly (https://openqa.fedoraproject.org/nightlies.html, use the "Fedora Latest Nightly, not latest "Known good") 2. Run it, and get to the live desktop. 3. Lock the session with Meta+L. For me, one screen shows the "Log in" button, one has a password field. Operating System: Fedora Linux 40 KDE Plasma Version: 5.93.0 KDE Frameworks Version: 5.249.0 Qt Version: 6.6.1 Kernel Version: 6.8.0-0.rc0.20240112git70d201a40823.5.fc40.x86_64 (64-bit) Graphics Platform: Wayland Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor Memory: 62.7 GiB of RAM Graphics Processor: AMD Radeon RX 6900 XT
This is effectively fixed in Plasma 6.4 due to the new "only show lock screen UI on one monitor" change.