Segmentation fault at closing testmanager

Load a layout, connect and close testmanager

Thread 1 "testmanager-ng" received signal SIGSEGV, Segmentation fault. 0x00007ffff5e1aaf5 in qt_qFindChildren_helper(QObject const*, QAnyStringView, QMetaObject const&, QList<void*>*, QFlagsQt::FindChildOption) () from /lib64/libQt6Core.so.6