STEPS TO REPRODUCE 1. Open Window Decorations KCM 2. Edit Breeze 3. Set the Button size to something that is not default and click Apply. 4. Click Defaults and then OK (Apply button does not get enabled) OBSERVED RESULT Non default window control size EXPECTED RESULT Default window control size (medium) Operating System: Fedora Linux 42 KDE Plasma Version: 6.5.3 KDE Frameworks Version: 6.20.0 Qt Version: 6.9.3 Kernel Version: 6.17.8-200.fc42.x86_64 (64-bit) Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 3600 6-Core Processor Memory: 32 GiB of RAM (31.3 GiB usable) Graphics Processor: AMD Radeon RX 7600
I can reproduce this on Plasma built from git-master