Attempting to use the SSH tunnel option in Compass to connect to an Atlas cluster secondary member fails. Even if the user identifies a secondary member for the connection and specifies a read preference of "Secondary", the following error is displayed.

An error occurred while loading navigation: 'not master and slaveOk=false': It is recommended to change your read preference in the connection dialog to Primary Preferred or Secondary Preferred or provide a replica set name for a full topology connection.

Note that while there are special restrictions on M0 (free tier) clusters, the example in the screenshots is an M30 cluster.