Atm there is no code to support the multiple recepients encription in the plugin. With attached patch it is possible. Reproducible: Always
Created attachment 95879 [details] multiple-recepients.patch
Thank you for the bug report. As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists. If this bug is no longer persisting or relevant please change the status to resolved.