schema-body element in UI blank and disabled

[mindscratch]

I've been running grpcox via docker for a while and it has worked great. Today, I started it, connected to a target, picked a service and then a method. The "schema-body" box on the left side is blank and disabled. The box to the right, labeled "Schema Input" is populated.

Looking at the JS console in Chrome, there are no messages. Looking at the network panel shows no problems. I can even see the request to the describe endpoint comes back with a template that appears to be what I'd expect to show up in the UI.

I was running gusaul/grpcox:fc59dfe22681. If I clone the repo and run make start, it's working.

Anyone else experience this?