SUMMARY The window itself is bugged for having minimize and maximize button. Open dolphin STEPS TO REPRODUCE 1. Open dolphin 2. Go to help > Report bug 3. maximize or minimize the window >> SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.24.5 KDE Frameworks Version: 5.94.0 Qt Version: 5.15.4 Kernel Version: 5.17.9-zen1-1-zen (64-bit) Graphics Platform: Wayland Graphics Processor: Mesa Intel® UHD Graphics 630 + NVIDIA
In general we always let people minimize windows, so it would be very disturbing if this one could not be. But being maximizable doesn't really make sense given the small content area, indeed.