Invoking Scavenge via API, but not seeing in the UI?

Hello, I ran curl -i -d {} -X POST http://localhost:2113/admin/scavenge -u “admin:mypassword” as documented on the web site, and expected to see a new event in the UI and the progressive update in the details. I see the messages in the log file, but nothing shows up in the UI.

I logged into another machine in my cluster and invoked it from the UI and the event showed up in the UI right away.

Is this normal, or is there something else I need to do to make it show up in the UI when initiating via curl?