Encore.ts Streaming Example not working as expected

[7iomka]

Encore.ts Streaming Examples

stream-in page example
Streaming state never change into success

    // Use stream.response() to get the final message from the server before the stream has closed
    const endMessage = await stream.response();
    addState(endMessage.success ? "Success" : "Error");

stream.response never done, so code after it never runs.
How to deal with that?
Is it bug?