CONNECT engine table_type=JDBC causes mysqldump --all-databases to fail

When CONNECT is set up for use with JDBC table types it causes mysqldump with the option --all-databases to fail.

It appears the reason is that CONNECT with JDBC creates a database called:

#mysql50#.oracle_jre_usage

The above shows up as a database but cannot be accessed via MySQL Workbench nor apparently backed up by mysqldump --all-databases