Segmentation fault after Qt.quit()

$ cat /sys/class/misc/mali0/device/gpuinfo
Mali-G51 2 cores r1p1 0x709

qml: Button clicked1 QtObject(0xad1078)
Called the C++ slot with message:
// Qt.quit called from C++
[642788.980]  -> xdg_toplevel@21.destroy()
[642789.026]  -> xdg_surface@20.destroy()
[642789.049]  -> wl_surface@19.destroy()
[642789.080]  -> wl_display@1.sync(new id wl_callback@29)
[642789.167]  -> wp_viewport@22.destroy()
// Segmentation fault