JSON CLEAR Command Non Responsive

Hello, I am using automation software to send JSON commands to Hyperion.

I can successfully SET any effect available however I am not able to CLEAR the effects and return to Ambilight.

This works as expected:

Send POST to: http://%hyperion_ip%/json-rpc(http://192.168.20.22:8090/json-rpc) -->(json) body: {
  "command":"effect",
  "effect":{
    "name":"Double swirl",
    "args":{
    }
  },
  "priority":50,
  "origin":"My App"}

This does not work:

Send POST to: http://%hyperion_ip%/json-rpc(http://192.168.20.22:8090/json-rpc) -->(json) body: {
  "command":"clear",
  "priority":-1,
}

There are a few other JSON commands that seem to be unresponsive. Such as, I am able to turn the LED's OFF via JSON, but cannot turn them back ON.