Server RPC @Delayed method invocations are not delayed

Vaadin 6 / 7 / 8
1

I’ve been experimenting with using RPC from JavaScript and found out that server RPC methods annotated with @Delayed are not actually delayed.
Consider the following interface:

public interface TestServerRpc extends ServerRpc {
    @Delayed(lastOnly = true)
    void valueChanged(String newValue);
}

I expect only the latest invocation to be sent to the server-side when something non-delayed is called but I see server-side method called every time it is invoked from JavaScript.
The only workaround I see is not to use RPC from JavaScript.

2

Seems to be already reported

http://dev.vaadin.com/ticket/10946