Hi,
It is the exact same bug as this one :
https://devzone.nordicsemi.com/f/nordic-q-a/19798/spi-init-triggers-old-nrf_spim_event_end
I am using directly nrfx_spim with SDK 15.3.
Adding : nrf_spim_event_clear NRF_SPIM_EVENT_END
just after nrfx_spim_uninit, solved the problem ...
How is it still a bug in new sdk ?
regads,