[BUG] Autosave with remote storage doesn't send network requests

OS: Windows 10 Browser: Chrome 73 GrapesJS version: 0.14.57

I have remote storage configured using this call to grapesjs.init():

const editor = grapesjs.init({
        container: editorRef.current,

        storageManager: {
            autosave: true,
            type: "remote",
            urlStore: "/store",
            urlLoad: "/load"
        }
    });

While I see the request to /load fire in the Network tab of Chrome's dev tools, I don't see any requests to /store, no matter how many changes I make in the editor. Is there a configuration option I'm missing, or something simple like that? I'm using Grapes inside React, using create-react-app; could that cause an issue?

I can replicate this on CodeSandbox.