iwinfo shows for the encryption:
Encryption: WPA3 SAE (CCMP, CCMP-256)
While 4 ciphers are enabled and functioning,
For example for a client hostapd_cli shows:
dot11RSNAStatsSelectedPairwiseCipher=00-0f-ac-9
which is GCMP-256.
If you want I can fix the bug myself, but I am not sure if this repo allows PRs and commits from "outsiders".