SUMMARY Kate doesn't support dark mode on macOS. STEPS TO REPRODUCE 1. Set macOS to use dark mode 2. Launch Kate OBSERVED RESULT It doesn't use dark mode. EXPECTED RESULT It uses dark mode (breeze dark). SOFTWARE/OS VERSIONS macOS: 12.4 KDE Frameworks Version: 5.96.0 Qt Version: 5.15.5
*I meant doesn't automatically switch to dark mode, not doesn't support. You can manually switch it to dark mode but it would be nice if it could do it automatically.
We have code to do this for Windows in KColorSchemeManager. It reads the system preferenceand switches between Breeze Light and Dark accordingly https://invent.kde.org/frameworks/kconfigwidgets/-/blob/master/src/kcolorschememanager.cpp#L101 Someone would need to add a macOS variant of that code
A possibly relevant merge request was started @ https://invent.kde.org/frameworks/kconfigwidgets/-/merge_requests/155
Fixed with https://invent.kde.org/frameworks/kconfigwidgets/-/merge_requests/161 and https://invent.kde.org/frameworks/kguiaddons/-/merge_requests/63