Is there a way to confirm that what I’m getting is due to the bug? If you mind, can you pointing me to the bug so I can watch it?
EDIT: From Custom UC20 Image for RPi4 fails
and using the command snap known account-key --remote public-key-sha3-384=$(snap keys | grep -Po '^NAME\s+\K.*') | grep since
The key dates from 2021-04-08T17:57:23Z, which is AFTER Nov2019.
The linked forum post also have bug pages, I’ll keep and eye out for when it gets fixed.