Once calling close() on a javax.ws.rs.sse.SseEventSink instance after it has been used to send events should not call the JAX-RS response processing pipeline going through filters or interceptors.
As stated by the spec only the initial Sse response is processed by the standard JAX-RS pipeline.
More sending any new response headers once an event has already been sent will not be commited to the client since headers has already been commited.