Some frameworks currently fail to build successfully due to some of their tests failing when built statically.
The bugs reported are:
kitemmodels: https://bugs.kde.org/show_bug.cgi?id=459321
kwindowsystem: https://bugs.kde.org/show_bug.cgi?id=459336
kconfig: https://bugs.kde.org/show_bug.cgi?id=459337