I have a Preact checkout UI extension. I’ve added a setting to its config, which I’m retrieving via useSubscription(shopify.settings). I can confirm that this works just fine for an instance of the extension that I’ve installed on my test store, but for a test instance that the shopify app dev command injects into the checkout, the settings hash is always empty. This means that the helpfully live-reloading instance injected by the dev server doesn’t actually reflect the true behaviour of the extension and makes testing functionality that depends on merchant-customisable settings unreliable.