CLI fails when JNLP port disabled

The blueocean plugin install errors at the CLI on a clean / new system (no other plugin on my standard list fail like this, for example, these install just fine: github-oauth and build-pipeline-plugin)

Repeatable steps on a clean system to reproduce:

/usr/bin/java -jar /var/cache/jenkins/war/WEB-INF/jenkins-cli.jar -s http://localhost:8080/ install-plugin blueocean -restart --username admin --password blahblahblah

Results in error:

SEVERE: I/O error in channel Chunked connection to http://localhost:8080/cli
java.io.IOException: Unexpected termination of the channel
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:73)
Caused by: java.io.EOFException
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2353)
at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2822)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:804)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:301)
at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:48)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:34)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:59)

hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected termination of the channel
at hudson.remoting.Request.abort(Request.java:307)
at hudson.remoting.Channel.terminate(Channel.java:888)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:92)
at ......remote call to Chunked connection to http://localhost:8080/cli(Native Method)
at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1537)
at hudson.remoting.Request.call(Request.java:172)
at hudson.remoting.Channel.call(Channel.java:821)
at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:256)
at com.sun.proxy.$Proxy3.main(Unknown Source)
at hudson.cli.CLI.execute(CLI.java:332)
at hudson.cli.CLI._main(CLI.java:503)
at hudson.cli.CLI.main(CLI.java:384)
Caused by: java.io.IOException: Unexpected termination of the channel
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:73)
Caused by: java.io.EOFException
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2353)
at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2822)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:804)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:301)
at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:48)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:34)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:59)

I have attached the Ansible playbook so you can see the exact build steps.
This is the line that errors either via playbook or via command line:

/usr/bin/java -jar /var/cache/jenkins/war/WEB-INF/jenkins-cli.jar -s http://localhost:8080/ install-plugin blueocean -restart --username admin --password blahblahblah

Note:
I am able to install other plugins using this same CLI command without issue.

Question / Thought:
Am I using a high enough version of Jenkins?

Here is how/where I am getting Jenkins 2.33 currently via :
http://pkg.jenkins.io/redhat