Followed the instructions from nRF (https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_sniffer_ble%2FUG%2Fsniffer_ble%2Fmin_requirements.html) Hare wireshark Version 3.6.7 (Git v3.6.7 packaged as 3.6.7-1~ubuntu20.04.0+wiresharkdevstable)
It starts ok but as soon as I click capture on the nRF sniffer wireshark freezes and needs to be killed