This anomaly applies to Revision 1, build codes QKAA-D00.
Application
Reset of the operating state after FIELDLOST event. In some cases, communication with the peer device is not possible.
Especially with stronger field strengths.
Restart of transfer is required.
On FIELDDETECTED event, wait 1 ms using timer before starting NFC communication with NRF_NFCT->TASKS_ACTIVATE.
This workaround is included in nrfx v2.0.0 and later.