Websockets Policy failing

They can't get websockets working with 3scale. Neither can I.
 
I've followed these instructions
[https://developers.redhat.com/articles/2021/07/01/how-expose-websocket-endpoint-using-red-hat-3scale-api-management#step_2__configure_3scale_api_management
]
 
My websockets API works fine directly - but when I try it via APICast, it fails. I've tried modifying ports 80, 8080,443, and wss and ws protocols, all fail.
 
I've added the simple steps I took to get it going based on the instructions - showing the error at the end. See here:
https://github.com/tnscorcoran/nodejs-websocket-3scale/blob/main/3scale-fail.md
 
I'm building a reproducible demo on Websockets with 3scale to share with them (and anyone else). It's here - containing all instructions to get this API running
https://github.com/tnscorcoran/nodejs-websocket-3scale/https://github.com/tnscorcoran/nodejs-websocket-3scale/blob/main/README.md