SUMMARY STEPS TO REPRODUCE 1. enable xdg-pip in kwin via KWIN_WAYLAND_SUPPORT_XX_PIP_V1=1 2. enable xdg-pip in firefox via widget.wayland.experimental.pip.enabled 3. open youtube video and detach pip window 4. confirm there's KWin::XXPipV1Window in "Wayland Windows" 3. add window rule for this window OBSERVED RESULT PiP window doesn't react to window rules. EXPECTED RESULT Placement rule places window wherever I want it to be. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 6.5.1 KDE Frameworks Version: 6.19.0 Qt Version: 6.10.0 Kernel Version: 6.17.5-arch1-1 (64-bit) Graphics Platform: Wayland ADDITIONAL INFORMATION