There is a known issue affecting the newly released oci compute-management instance-configuration create and oci compute-management instance-configuration launch-compute-instance commands in version 2.4.35 of the CLI.
These commands are improperly serializing the ssh_authorized_keys property inside instance metadata, which results in the inability to SSH into the created instances.
Note that this only affects the new compute-management operations, and launching instances through other commands will continue to work as expected.