Position of events reported by mysqlbinlog is wrong with encrypted binlogs, SHOW BINLOG EVENTS reports the correct one.

Using encrypted binlogs it was impossible to point a Slave to the Master getting error:

2019-09-09 5:55:23 139739348764416 [ERROR] Error reading packet from server: log event entry exceeded max_allowed_packet; Increase max_allowed_packet on master; the first event 'mysql-binlog.016054' at 763411303, the last event read from 'mysql-binlog.nnnnn' at xxxxxxx, the last byte read from 'mysql-binlog.nnnnn at yyyyyyy. (server_errno=1236)

The error message is misleading because it's just due to pointing to a wrong position.

Using the positions reported by SHOW BINLOG EVENTS worked.