The UK retains all of the rights and responsibilities of an EU member state for the duration of the transition period. However, it is quite possible that the same issue will re-occur should a future trade agreement not be reached that includes membership of EASA or mutual agreement of licences. The problem is that we cannot be members of EASA without accepting the jurisdiction of the ECJ, which the current UK government appears determined not to do. I wouldn't expect any help from the CAA as they're fumbling around in the dark just like the rest of us.